Alec Baldwin has hit new levels of fame with his notorious impersonation of President Donald Trump that's so good, The Donald hopes NBC will cancel 'Saturday Night Live' and put a stop to it. But Trump isn't the only commander-in-chief in Baldwin's repertoire. On Tuesday, he stopped by 'The Late Show' and surprised host Stephen Colbert with an impromptu impersonation of Richard Nixon.

Back in the late 1970s, Alec Baldwin ran an unsuccessful campaign to become president of his alma mater - George Washington University. And when he came up short at the ballot box, he received a letter of consolation from none other than the former president.

Check out the clip of him reading segments of the missive as Nixon. Baldwin also opens up about how he gets into character as Trump.

h/t Time