No he's more or less a fictional character in a movie. There was a Thomas Gates who was a general but had nothing to do with the assassination.
One who is in favor of greater taxation on the wealthy would most likely be called a D.) fascist
The administration sought to reduce tensions with the USSR/Soviet Union, China and Latin America
The Executive branch must receive approval from "the Senate" when appointing heads of executive departments, ambassadors, and Federal Court Judges, since this is one of the most important examples of the system of "checks and balances" that exists in the US.