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FactCheck.org is celebrating 15 years of holding politicians accountable.

Is Mexico Paying for the Wall Through USMCA?

President Donald Trump declared via Twitter that he is keeping perhaps his most famous campaign promise, claiming that “MEXICO IS PAYING FOR THE WALL!” through a recent trade agreement negotiated with Mexico. But economic and trade experts we interviewed said that’s not possible.

Video: FactChecking Oval Office Meeting Claims

In this week’s fact-checking video, CNN’s Jake Tapper reviews some of the claims that we wrote about following the contentious Oval Office meeting on Dec. 11 between President Donald Trump and the Democratic congressional leaders.

FactChecking the Trump-Pelosi-Schumer Scuffle

In a contentious Oval Office meeting, President Donald Trump and the Democratic congressional leaders — Nancy Pelosi and Chuck Schumer — disagreed over funding for a border wall, mangling some facts in the process.

Several Administrations Used Tear Gas at the Border

Q: During the Obama administration, did Border Patrol agents use tear gas to control crowds of migrants during incidents at the U.S.-Mexico border?

A: Yes, and the gas was also used by administrations prior to his, news reports say.

Trump’s Misleading Paris Agreement Tweets

On Dec. 4, President Donald Trump tweeted about French President Emmanuel Macron and the Paris Agreement, misrepresenting the foreign leader’s position on the climate accord. Macron has not said or suggested the Paris Agreement is “fatally flawed,” as Trump implied.

Our 15th Anniversary

FactCheck.org’s co-founder takes a look back at our beginnings and how the fact-checking landscape has changed.

Ocasio-Cortez’s Misguided Tweet

Rep.-elect Alexandria Ocasio-Cortez tweeted that $21 trillion worth of “Pentagon accounting errors” could finance two-thirds of Medicare for All. It can’t.

Video: Trump’s Climate Claims to the Post

In this week’s fact-checking video, CNN’s Jake Tapper looks at three climate-related claims President Donald Trump made in an interview with the Washington Post.