Trump is an extension of the trend in US politics, "the most corrupt in history" is a silly statement. Corruption was rife in the US in the 1800s, also JFK only got elected because of the mafia and democrat machine in Chicago, then we have Nixon (who committed treason with the Vietnamese behind the then President's back), a Bill Clinton who sold out and then made massive amounts of money off his Presidency, then GWB who got the Supreme Court to gift him the Presidency and started a massive illegal spying apparatus, then Obama who sold out and is now cashing in at $300,000+ for a 30 minute speech to the bankers that he saved in 2008. Then of course, there is Hillary and Mr Biden and his ever "fortuitous" family. We also have all the FBI, CIA, NSA shenanigans brought into the light by the 1970s Church Committee (and a lot never got to see the light of day). Oh, and members of Congress are not subject to insider trading laws with respect to information they gain during their normal course of business.
Trump is bad, but he is nothing special. At least he hasn't started any new wars (yet) for US sons and daughters to die needlessly in. Two parties, pretty much following the same policies. We need Bernie, but he will probably get cheated again, or maybe die of "natural causes" or in an "accident".