20,055 Lies

(Donald Trump has many 'tells' when he's about to lie: saying "believe me" or "trust me", asking "ready?",
using "sir" in a story, claiming to have set a record, citing almost any number ... and "accordion hands".)

In the early days of Donald Trump's time in the White House — his first 100 days — he was on pace to make about 7,000 false and misleading claims (hereinafter referred to as "lies") during his first term.

He picked up the pace. After Trump took 827 days to tell 10,000 lies, he needed only another 440 days to reach 20,000 lies. That milestone was achieved on July 9, a day Trump uttered 62 verifiable lies (being interview by Fox's Sean Hannity didn't hurt).

The Washington Post's Fact Checker Database has logged 20,055 lies in 1,267 days (through July 9)

Trump has lied the most times (1,165) when referring to the Ukraine investigation and his subsequent impeachment, but the coronavirus pandemic is racing up the charts (977).

Trump's most repeated specific lie — 360 times — is that the U.S. economy before the pandemic was the best in history. This #1 hit debuted back in June 2018. In recent months, Trump has added some exaggeration, claiming to have built "the best economy in the history of the world". Trump has played this warhorse more than 100 times since the coronavirus hit the US.

Trump's second-most repeated lie — 261 times — is that his border wall is being built. There has been little actual work, and most of that has been simply shoring up parts of already-existing structures. The steel bollard fencing being used "is easily breached, with smugglers sawing through it" (WaPo), though Trump claims that's impossible. (Or the wind has blown it down.) Only three miles of new barrier has been constructed on formerly open land.

Trump said recently that the wall was nearly completed (!); the three miles of new wall amounts to 0.0015% of the US's 1,954-mile-long southern border. ... That's like calling yourself a millionaire when you have $1,500.

Trump has lied 210 times about passing the biggest tax cut in history. That's not even close to being true. Trump's tax cut was 0.9% of the US's gross domestic product, while Ronald Reagan's 1981 tax cut was 2.9% of the GDP.

The WaPo's lie collectors have turned their research into a book: Donald Trump and His Assault on Truth: The President's Falsehoods, Misleading Claims and Flat-Out Lies.