Re: drain the swamp
Flynn was (maybe still is) a registered democrat. Remember, he worked for Obama before he worked for Trump - so since he's in trouble the right wing media lately refers to him as a "former Obama official" trying to distance him from Trump.
He had ethical issues working for Obama, and was "asked to retire" a year before he was due to leave because of those issues. Reportedly the only personnel advice Obama gave Trump in their meeting in the White House after the election was not to hire Flynn, guess he should have listened!