1/ Today, @nbcnews published my latest feature on the falsehoods and conspiracy theories that have defined Donald Trump's presidency.

It's the culmination of many years of reporting, so I thought I'd take you on a little trip through fact check history...

2/ But first, please read the story!

3/ I started this work as a campaign reporter — watching the now-president come down the escalator at Trump Tower in 2015 — and realizing that this beat would be different, that this candidate was different, and he was frequently not telling the truth.

4/ I chased Trump and other candidates all around the country for 18 months. By the time we reached the fall of the general election, the falsehoods were coming fast and furious

5/ I'd cut my teeth as a young reporter fact checking other reporters' stories at major magazines for $.

And it had been several years since, but I couldn't really shake the instinct to print all the speeches and debates and take my trusty red and black pens to them.