The list is long. First and foremost, it's never a good idea to forget that wherever there's intelligence there's always also stupidity. Then it's generally good advice not to confuse intelligence for wisdom. And between this and very long lists of cognitive biases, there's always the good old "Fuck ya, got mine!" Rule of Acquisition to remember. Et cetera.
Because a high IQ and a science degree does not mean that those people make good political decisions. A lot of political decision making is driven by ideology and identity. A lot of high IQ people may have strong mathematical and problem solving skills, but are morons in absolutely every other aspect of life.
And, many of my friends who were doing PHD they used to follow dems, but are now supporting republicans after they got citizenship....
I am sure I just naive, I guess we can hope all the international bad will is going away with Trump.