You are kidding right? There are hundreds of documented lies., but for starters: he lied about having the largest inauguration crowd, he lied about the US having the highest murder rate in 47 years (It was higher all through the 80's and 90's); he lied about receiving the highest electoral votes since Reagan ( Bush, Clinton, and Obama got more). He lied about a terror attack in Sweden;  He said he didn't know Steve Bannon;  He said the US had a trade deficit with Canada of 17 Billion (they had a surplus of $8 B). He declared "We are the highest taxed nation in the world" (the are not).

Just one? Give us a break!