Donald Trump wrote in a Twitter message after Election Day that he would have won the popular vote “if you deduct the millions of people who voted illegally.” He made the claim again on Monday, prompting the New York Times to publish this headline: "Trump Repeats Lie About Popular Vote in Meeting With Lawmakers."

While it's unclear if Trump is intentionally lying to the American people, he has been called out for lying many times since he launched his campaign for the White House. And even Republicans have suggested that Trump's alternative facts could hurt the U.S. 

“To continue to suggest that the 2016 election was conducted in a fashion that millions of people voted illegally undermines faith in our democracy,” Sen. Lindsay Graham, of South Carolina, told reporters this week. “It’s not coming from a candidate for the office, it’s coming from the man who holds the office. So I am begging the president, share with us the information you have about this or please stop saying it.”

CNN host Jake Tapper called Trump's claims “fiction.” “It is empirically a stunning allegation for which the White House is providing no evidence,” Tapper said this week. “And there is a reason they are providing no evidence. There is no evidence ― it is not true.”

Can't keep Trump's less than fully accurate statements straight? Here's a lost of his top "alternative facts," as his administration has taken to calling them. 

1. Despite ample photographic evidence to the contrary, Trump said in a speech to the CIA Saturday that his inaugural address was watched by a crowd that "looked like a million, a million and a half people."

2. Trump said God favored him during his inaugural address by stopping rain from falling when he spoke. "And then it became really sunny," he said. In fact, It rained throughout his speech.

3. Trump denied officials were concerned about Russia's election hacking, even thought it was an issue at least a month before Election Day. "If Russia, or some other entity, was hacking, why did the White House wait so long to act? Why did they only complain after Hillary lost?" Trump said.

4. He accused former President Barack Obama of "screaming at a protester, and frankly it was a disgrace," when in reality Obama defended the protester.

5. After four scientific polls showed Trump lost his second debate against Hillary Clinton, he said he won "in a landslide" in "every poll."