If the President really wants to drain the swamp, he needs to start with the DOJ and the FBI. They are the leaders hiding all the scandals or obstructing known scandals. Take the top ten to 15 of the leadership out and there would be all kinds of evidence against the Obama administration and his toadies and probably against some rhinos who are hiding behind the DOJ.
Reinstate the firing squad. Send Obama and Hillery there first. Then you can drain the swamp.