• President Donald Trump is swept up in an impeachment inquiry that seriously threatens his presidency – and an unfounded conspiracy theory that reached the Oval Office is largely responsible for it.
  • During a July 25 phone call with Ukrainian President Volodymyr Zelensky, Trump pressured him to launch an investigation into former vice president Joe Biden and his son, Hunter Biden, over unsubstantiated allegations of corruption.
  • Then reports of the call – and the disclosure of a whistleblower complaint filed against the president – spurred Democrats to initiate impeachment proceedings against Trump that could lead to his removal from office.
  • But this certainly was not the first debunked or unverified conspiracy theory Trump has floated and encouraged during his time in the political spotlight.
  • Here are 24 of the most notable conspiracy theories Trump has entertained over the years.

President Donald Trump is swept up in an impeachment inquiry that seriously threatens his presidency – and an unfounded conspiracy theory that reached the Oval Office is largely responsible for it.

During a July 25 phone call with Ukrainian President Volodymyr Zelensky, Trump pressured him to launch an investigation into former vice president Joe Biden and his son, Hunter Biden, over unsubstantiated allegations of corruption. Then reports of the call – and the disclosure of a whistleblower complaint filed against the president – spurred Democrats to initiate impeachment proceedings against Trump that could lead to his removal from office.

But that certainly was not the first debunked or unverified conspiracy theory Trump has floated and encouraged during his time in the political spotlight.

Throughout his presidency, on the campaign trail, and even in the years prior, Trump has floated theories fueled by the conspiratorial-minded corners of supermarket tabloids and the darkest corners of the internet.

Here are 24 of the most notable conspiracy theories Trump has entertained over the years.


Questions about Ted Cruz’s father’s potential ties to President John F. Kennedy’s assassin.

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Foto: Ted Cruz.sourceSpencer Platt/Getty Images

On the eve of the Indiana primary in 2016, Trump attempted to undermine former Republican presidential rival Ted Cruz’s father’s legitimacy by parroting an unverified National Enquirer story.

It claimed Rafael Cruz was photographed in the early 1960s handing out pro-Fidel Castro leaflets with President John F. Kennedy’s assassin, Lee Harvey Oswald.

The Cruz campaign denounced the piece as “garbage.”


Questions about President Obama’s birth certificate.

Foto: Donald Trump speaking to reporters after Obama released his long-form birth certificate.sourceMatthew Cavanaugh/Getty Images

While mulling a potential 2012 presidential bid, Trump became the most high-profile figure to promote the rumors suggesting that President Obama was not born in the US.

Trump claimed he’d deployed private investigators who “could not believe what they’re finding” about Obama’s place of birth.

He also repeatedly clashed with reporters who pushed him on the issue. During one contentious interview, he told ABC’s George Stephanopoulos that he’d been “co-opted” by “Obama and his minions” when the anchor tried to push back on Trump’s claims.

When Obama eventually released his long-form birth certificate, Trump questioned the document’s authenticity.

Trump has since continued to push the conspiracy theory in recent months during his presidency, according to advisors who spoke with The New York Times. One sitting US senator echoed these reports.

“[Trump] has had a hard time letting go of his claim that Mr. Obama was not born in the United States,” the senator told The Times.


Questions about a former Bill Clinton aide’s suicide.

Foto: The Clintons leave Foster’s funeral in 1993.sourceAP Photo/Alex Brandon

After Vince Foster, a former aide to President Bill Clinton, was found dead in 1993, various law-enforcement agencies and independent counsels determined he committed suicide.

But Foster’s death spawned conspiracy theorists who questioned whether the Clintons themselves were involved in Foster’s death.

In an interview with the Washington Post, Trump suggested Foster’s death was “very fishy.”

“He had intimate knowledge of what was going on,” Trump said of Foster’s role in the White House. “He knew everything that was going on, and then all of a sudden he committed suicide.”

He added: “I don’t bring [Foster’s death] up because I don’t know enough to really discuss it. I will say there are people who continue to bring it up because they think it was absolutely a murder. I don’t do that because I don’t think it’s fair.”


Questions about whether Syrian refugees are ISIS terrorists.

Foto: Donald Trump.sourceAP

Trump has, in part, justified his plan to temporarily bar Muslim immigrants from entering the US by claiming that refugees coming from Syria “could be a Trojan horse.”

“It could be one of the greatest coups of all time,” Trump told Fox News’ Sean Hannity in 2015. “They could be ISIS. It could be a plot. I mean, I don’t want to think in terms of conspiracy, but it could be a plot.”

But the process for vetting refugees typically lasts 18 to 24 months, and immigration experts maintain it is one of the most difficult ways for terrorists to attempt to enter the US legally.

“It is extremely unlikely that someone who is a terrorist will be sent through the refugee resettlement program,” Greg Chen, the director of advocacy at the American Immigration Lawyers Association, told Business Insider.

He added: “It takes a great deal of time, and it wouldn’t make sense for someone who is a terrorist for someone to go through that process. There are going to be easier ways for a terrorist to try to infiltrate, rather than going through the refugee resettlement program.”


Questions about whether an ISIS-linked terrorist attempted to charge at Trump on stage.

Foto: Secret Service agents form a perimeter around Trump after a man attempted to charge the stage at an Ohio rally.sourcereuters

After an attendee at Trump’s March 2016 rally in Dayton, Ohio, attempted to charge the stage, Trump claimed a video he retweeted proved the attendee was a terrorist linked to ISIS.

“He was playing Arabic music. He was dragging the flag along the ground, and he had internet chatter with ISIS and about ISIS. So I don’t know if he was or not,” Trump said. “But all we did was put out what he had on his internet. He’s dragging the flag, the American flag, which I respect obviously more than you.”

He added: “What do I know about it? All I know is what’s on the internet. And I don’t like to see a man dragging the American flag along the ground in a mocking fashion.”

Multiple news outlets and fact-checkers debunked the video’s authenticity. No government agency has said the man was connected to ISIS or other terrorist groups.


Questions about Supreme Court Justice Antonin Scalia’s death.

Foto: Antonin Scalia.sourceREUTERS/Brendan McDermid

Law enforcement determined there was no evidence of foul play in Justice Antonin Scalia’s sudden death in 2016.

Asked about the circumstances of Scalia’s death, Trump said he was unsure about what caused Scalia’s death. Trump noted a pillow was found over the justice’s face, a claim authorities rebutted.

“I’m hearing it’s a big topic,” Trump said in a radio interview. “It’s a horrible topic but they’re saying they found the pillow on his face, which is a pretty unusual place to find a pillow.”

He added: “I can’t give you an answer. It’s just starting to come out now.”


Questions about whether childhood vaccines cause autism.

Foto: Donald Trump.sourceREUTERS/Scott Audette

At a Republican presidential debate in 2016, CNN host Jake Tapper asked Trump about his position that vaccines can cause autism.

“We had so many instances, people that work for me, just the other day, 2 years old, a beautiful child, went to have the vaccine and came back and a week later got a tremendous fever, got very, very sick, now is autistic,” Trump said.

Shortly after Trump’s assertion, former presidential candidate and neurosurgeon Ben Carson corrected the real-estate mogul, pointing out that overwhelming medical evidence suggests that there’s no link between autism and vaccines.

A 2013 study from the Centers for Disease Control and Prevention found no connection between vaccines and an increased risk of autism.


Questions about whether Muslims in New Jersey were cheering after 9/11.

Foto: Donald Trump.sourceJustin Sullivan/Getty Images

Trump emphatically claimed he saw televised news reports of Muslims cheering in New Jersey after the September 11, 2001, terrorist attacks.

“There were people that were cheering on the other side of New Jersey, where you have large Arab populations. They were cheering as the World Trade Center came down,” Trump said during an ABC interview.

He added: “I know it might be not politically correct for you to talk about it, but there were people cheering as that building came down – as those buildings came down. And that tells you something. It was well-covered at the time.”

However, there is no evidence to suggest there were any American celebrations aired on television following the attacks. Some media reports at the time cited rumors of celebrations in New Jersey. But reports were never substantiated, and there’s no evidence these protests were broadcast on national television.


Questions about whether wives of 9/11 hijackers fled to Saudi Arabia before the attacks.

Foto: Donald Trump.sourceJoe Raedle/Getty Images

The presumptive Republican presidential nominee repeatedly stated last year that the terrorists who carried out the September 11, 2001, attacks moved their families out of the US to Saudi Arabia several days before the hijacking.

“When you had the World Trade Center go, people were put into planes that were friends, family, girlfriends, and they were put into planes and they were sent back, for the most part, to Saudi Arabia,” Trump said. “They knew what was going on. They went home and they wanted to watch their boyfriends on television.”

The 9/11 commission report, the most extensive investigation into the events surrounding the attacks, determined that few of the hijackers kept in contact with their families, and none had family members living in the US.

PolitiFact also called the claim false.


Questions about the legitimacy of climate change.

Foto: Donald Trump at his golf course in Scotland.sourceREUTERS/David Moir

Though many Republican leaders remain skeptical of climate change, Trump has taken his skepticism a step further. In 2012 he suggested that climate change is a “total, and very expensive hoax” perpetuated by China’s government.

“The concept of global warming was created by and for the Chinese in order to make U.S. manufacturing non-competitive,” Trump tweeted in 2012.

Trump backed off the tweet, telling Fox News that his comment was a “joke.” Still, the real-estate mogul has repeatedly maintained that climate change was a hoax, and said climate-change studies are “done for the benefit of China.”

According to NASA, 97% of publishing climate scientists believe that human activities such as burning of fossil fuels have caused climate change.


Questions about whether asbestos is a “great con.”

Foto: Donald Trump at the New York Stock Exchange in 1995.sourceAP Photo/Kathy Willens

In a 1992 interview with New York magazine, Trump suggested the mob’s “strong lobby” in New York may be responsible for asbestos.

“One of the great cons is asbestos,” Trump said. “There’s nothing wrong except the mob has a strong lobby in Albany because they have the dumps and control the truck.”

Trump has more recently embraced the reality.

Last year, the real-estate mogul cited how he increased the valuation of one of his properties by millions after embarking on a massive asbestos-removal operation.


Questions about Marco Rubio’s presidential eligibility.

Foto: Marco Rubio and Donald Trump at a Republican debate in early 2016.sourceREUTERS/Mike Stone

Trump has a long history of speculating whether potential presidential rivals are constitutionally eligible to serve.

In February 2016, the former reality-TV star retweeted a supporter who claimed Rubio was ineligible to run because his parents were not natural-born US citizens, a claim that no major constitutional experts support.

When confronted on ABC’s “This Week” about whether he believed Rubio was not constitutionally permitted to occupy the presidency, Trump, whose mother was born in Scotland, refused to disavow the tweet.

“I’ve never looked at it, George,” Trump said of the tweet. “I honestly have never looked at it. As somebody said, he’s not. And I retweeted it. I have 14 million people between Twitter and Facebook and Instagram, and I retweet things and we start dialogue and it’s very interesting.”

He added: “I’m not sure. Let people make their own determination.”


Questions about Fox News being owned by a Saudi billionaire.

Foto: sourceDonald Trump

Trump’s war with Fox News’ Megyn Kelly recently reached a detente.

But during the peak of Trump’s rhetorical battle with Kelly, he perpetuated a prominent outlandish theory from one of his Twitter followers.

In January 2016, the real-estate mogul retweeted a photo purportedly showing Saudi billionaire Prince Alwaleed bin Talal with Kelly. The photo claimed the prince was a partial Fox News owner, which multiple outlets found was untrue. Alwaleed’s investment company owns a small share of 21st Century Fox.


Questions about the legitimacy of the “Access Hollywood” tape.

Foto: Trump in the “Access Hollywood” tape.sourceNBC

Toward the tail end of his presidential campaign, the 2005 “Access Hollywood” tape featuring Trump apparently admitting that he likes to grab women “by the p—-” received broad coverage, and Trump apologized for his comments shortly afterward.

More recently though, after various allegations of sexual harassment in media and politics have begun to surface, Trump has walked back these comments.

“We don’t think that was my voice,” Trump reportedly told a senator, according to The New York Tiimes.

The Times’ sources did not elaborate on why Trump has begun to doubt the authenticity of the tape’s audio.


Claims that Joe Scarborough killed one of his interns.

Foto: Joe Scarborough on MSNBC.sourceMSNBC

In a tweet Trump sent in November 2017, he made references to a conspiracy theory that claims MSNBC anchor Joe Scarborough of “Morning Joe” murdered one of his staffers in Florida in 2001.

“So now that Matt Lauer is gone when will the Fake News practitioners at NBC be terminating the contract of Phil Griffin?” the tweet read. “And will they terminate low ratings Joe Scarborough based on the ‘unsolved mystery’ that took place in Florida years ago? Investigate!”

While Scarborough was serving as a Republican congressman in Florida’s 1st district, one of his interns, Lori Klausutis, was found dead in the office. A coroner found no evidence of foul play, and indicated that the death occurred because of a heart problem that caused the intern to fatally hit her head on her desk.


Claims that Obama had wiretapped Trump’s phone.

Foto: Obama campaigns in support of Northam at a rally with supporters in Richmond, VirginiasourceThomson Reuters

In March 2017, Trump sent a tweet accusing Obama of wiretapping his phones in Trump Tower.

“Terrible!” Trump wrote, “Just found out that Obama had my ‘wires tapped’ in Trump Tower just before the victory. Nothing found. This is McCarthyism!”

PolitiFact and other outlets have debunked the claim. An Obama spokesman also issued a response to the allegation, saying: “Neither Barack Obama nor any White House official under Obama ever ordered surveillance of any U.S. citizen.”


Claims that voter fraud in the 2016 election cost him the popular vote.

Foto: People vote at the Evergreen Recreation Center during the 2016 presidential election in the Boyle Heights area of Los Angeles.sourceThomson Reuters

In a tweet sent shortly after the November 2016 election, Trump wrote: “In addition to winning the Electoral College in a landslide, I won the popular vote if you deduct the millions of people who voted illegally.”

This unsubstantiated claim was repeated by Kris Kobach, the chairman of Trump’s panel on voter fraud, in July. The fact-checking site Snopes has debunked the claim entirely, citing “zero evidence.”


Retweeting anti-Muslim conspiracy videos.

Foto: A screenshot of one of the videos Trump retweeted.source@JaydaBF/Twitter

In November 2017, Trump caused diplomatic havoc by retweeting three videos posted by Jayda Fransen of the ultra-nationalist, anti-Muslim organization Britain First that purportedly showed Muslims in Europe committing crimes and destroying Christian icons.

Britain First has frequently targeted mosques and Muslims in the UK in order to brand all Muslims as violent extremists, and Trump’s retweet of the videos was widely seen as a tacit endorsement of the group’s efforts.

Although the authenticity of the videos has been called into question, White House press secretary Sarah Huckabee Sanders has maintained this doesn’t matter.

“Whether it’s a real video, the threat is real,” she told reporters.


Claims 3,000 people didn’t die in Puerto Rico after Hurricane Maria and that Democrats inflated the death toll.

Foto: Trump tosses paper towels into a crowd at Calvary Chapel in Guaynabo, Puerto Rico.sourceEvan Vucci/AP

In a September 2018 tweet, Trump claimed 3,000 people didn’t die in Puerto Rico after Hurricane Maria and accused Democrats of inflating the death toll to make him “look as bad as possible,” rejecting the findings of a government-funded study in the process.

“3000 people did not die in the two hurricanes that hit Puerto Rico,” he said. “When I left the Island, AFTER the storm had hit, they had anywhere from 6 to 18 deaths. As time went by it did not go up by much. Then, a long time later, they started to report really large numbers, like 3000…”

He then added: “This was done by the Democrats in order to make me look as bad as possible when I was successfully raising Billions of Dollars to help rebuild Puerto Rico. If a person died for any reason, like old age, just add them onto the list. Bad politics. I love Puerto Rico!”

A study commissioned by the Puerto Rico government that was released in August found that 2,975 people died in the wake of the storm.

Trump has been widely criticized for his response to Hurricane Maria, particularly by San Juan Mayor Carmin Yulín Cruz.

In response to Trump’s claims on Thursday, Cruz tweeted, “This is what denial following neglect looks like: Mr Pres in the real world people died on your watch. YOUR LACK OF RESPECT IS APPALLING!”


Claims windmills cause cancer.

Foto: sourceFlickr/Motorito

In April 2019 Trump railed against wind power and claimed the noise fron windmills causes cancer.

If you have a windmill anywhere near your house, congratulations, your house just went down 75 percent in value,” Trump said at a Republican congressional fundraising dinner. “And they say the noise causes cancer.”

Iowa’s two Republican senators, Chuck Grassley and Joni Ernst, called his remarks “idiotic” and “ridiculous,” respectively.

A 2014 report for the National Institutes of Health concluded while wind farms could cause disrupt a person’s sleep or induce headaches, its negative impact health doesn’t go beyond that.

“The weight of evidence suggests that when sited properly, wind turbines are not related to adverse health,” the researchers wrote.


Claims the Clintons killed Jeffrey Epstein.

Foto: Bill and Hillary ClintonsourceJustin Sullivan/Getty Images

In August 2019, Trump promoted a baseless conspiracy theory on his Twitter account connecting former President Bill Clinton and former Secretary of State Hillary Clinton to the death of financier and alleged sex offender Jeffrey Epstein.

Trump retweeted a video from conservative comedian Terrence Williams, who claimed without any evidence the Clintons were responsible for killing Epstein. The multimillionaire reportedly killed himself in a Manhattan jail cell in early August.

Law enforcement officials are investigating Epstein’s death, but none have suggested so far there was foul play, much less allege political figures were involved.


    Claims former vice president Joe Biden was corrupt in his dealings with Ukraine during the Obama administration.

    Foto: Former Vice President Joe Biden.sourceRitzau Scanpix/Keld Navntoft via REUTERS

    In a July 25 phone call with Ukrainian President Volodymyr Zelensky, Trump repeatedly pushed his foreign counterpart to probe Biden over baseless allegations that he helped oust Ukraine’s top prosecutor in the midst of an investigation into an energy company his son held a board position on.

    “There’s a lot of talk about Biden’s son, that Biden stopped the prosecution and a lot of people want to find out about that so whatever you can do with the Attorney General would be great,” Trump said in a rough memo of the call released by the White House.

    There isn’t any evidence to support that allegation, which has been spread by Trump and his conservative allies. Nothing has come to light that proves Biden tried helping his son in Ukraine. Biden instead had been pressing Ukraine to dismiss a prosecutor who failed to curb corruption in the country in a campaign backed by other world leaders and institutions like the International Monetary Fund.

    The investigation into Burisma Holdings, the natural gas company, was dormant around the time Biden started traveling into Ukraine in 2014. And Ukraine’s general prosecutor Yuriy Lutsenko recently told the BBC he didn’t “know any reason to investigate Joe Biden or Hunter Biden according to Ukrainian law.”


    Claims a cybersecurity company named Crowdstrike framed Russia for election interference.

    Foto: Trump talks to the media about the whistleblower in the Oval Office of the White House on September 30, 2019.sourceChip Somodevilla/Getty Images

    Trump floated the baseless conspiracy theory during the same July phone call with Zelensky.

    “I would like you to do us a favor though because our country has been through a lot and Ukraine knows a lot about it. I would like you to find out what happened with this whole situation with Ukraine. They say CrowdStrike,” Trump said in a rough memo of the call released by the White House.

    Crowdstrike was the cybersecurity company that the Democratic National Committee contracted to investigate its hacked servers during the 2016 presidential election, and it concluded Russia was behind the attack. The theory, however, maintains that Crowdstrike framed Russia – exonerating it from interfering in the election to aid Trump’s victory.

    According to NBC News, the thoroughly debunked theory originated on 4chan and has also been spread on far-right blogs and Fox News.


    Claims Ukraine may be hiding Hillary Clinton’s missing emails.

    Foto: Hillary ClintonsourceMike Coppola/Getty Images

    Trump recently said he believed that Hillary Clinton’s deleted emails could be on a server hidden away in Ukraine.

    Asked by a reporter if he believed some of Clinton’s deleted emails could be in Ukraine in September, Trump said, “I think they could be.”

    Then he doubled down on it: “I think one of the great crimes committed is Hillary Clinton deleting 33,000 emails after Congress sends her a subpoena.”

    This theory is grew out of the unfounded Crowdstrike allegation and its been debunked as well. NBC News reports that Clinton’s team sorted her emails into private and work-related batches to turn them over to the State Department in 2014. Then the employee managing the server was ordered to delete the 33,000 personal emails in December, around four months before Congress subpoenaed them.

    Weeks after the subpoena was issued, the employee deleted the emails when he realized he hadn’t done as he was instructed.

    In a 2016 statement, then-FBI Director James Comey said the investigation”found no evidence that any of the additional work-related emails were intentionally deleted in an effort to conceal them.” FBI agents later recovered many of them and the agency concluded Clinton was careless in handling her emails.