The DNC didn’t steal a thing for Clinton. They clearly wanted to (which is a breach of trust worthy of resignations), but our email evidence shows that they either didn’t try, or failed… but she beat Sanders anyway, because the majority of people eligible to nominate a Democratic nominee wanted her to be president. That is a fact.
The people in Congress who will back Trump are the people backing Trump now. Plus the even crazier people he galvanized to run and win with his newly emboldened base. Here’s a better question — what makes you think the “allow the crazy populist into government, but reign him in when he gets there” gambit is going to work when it never, ever, does?