During and between his terms as President of the United States, Donald Trump has made tens of thousands of false or misleading claims. Fact-checkers at The Washington Post documented 30,573 false or misleading claims during his first presidential term, an average of 21 per day. Commentators and fact-checkers have described Trump's lying as unprecedented in American politics, and the consistency of falsehoods as a distinctive part of his business and political identities. Scholarly analysis of Trump's tweets found significant evidence of an intent to deceive.
Many news organizations initially resisted describing Trump's falsehoods as lies, but began to do so by June 2019. The Washington Post said his frequent repetition of claims he knew to be false amounted to a campaign based on disinformation. Steve Bannon, Trump's 2016 presidential campaign CEO and chief strategist during the first seven months of Trump's first presidency, said that the press, rather than Democrats, was Trump's primary adversary and "the way to deal with them is to flood the zone with shit." In February 2025, a public relations CEO stated that the "flood the zone" tactic (also known as the firehose of falsehood) was designed to make sure no single action or event stands out above the rest by having them occur at a rapid pace, thus preventing the public from keeping up and preventing controversy or outrage over a specific action or event.