I'll cite George H. W. Bush, Bob Dole, George W. Bush, John McCain, Mitt Romney and Jeb Bush as textbook examples of this.
It has been quite a pathetic group of losers we’ve been stuck with. Most times, it was obvious up front, but in a couple of cases such as the Bush sons we didn’t know for sure until later. I think Trump is shaping up to be another one of those.
Bottom line, NO politicians should ever be trusted, they’re all slimeballs at the core. They should only be measured by what potential good they can do, verses all the negative issues they will be sure to cause.