From the beginning I've said that while it's absurd to think of the US federal government as not having a corruption problem - the things which purport to "measure" such things just define US corruption away - we didn't have a "put sacks of
cash on the president's desk" problem.
Managing to keep that taboo has been a victory, and it was inevitable that Trump would smash it because he's too dumb for the more complicated legal corruption that was easily available to him and his people (though they have been learning that, too).