To answer your question. It's not what he did but may have done. It's becoming apparent that the people around him tried to cash in with Russia. I wouldn't call them traitors because these people have no interest in patriotism - they only care about putting money into their bank accounts. They will sell out their country if it benefits them. What the hearings are about is how far up does this go in the Trump chain?
RE: Simple serious question: What has Donald Trump actually done wrong?