Problem 1: his primary focus is social issues, and he seems to have no problem running on a “like Sharia, but Catholic” platform.
Problem 2: He lost his election, and then stayed in DC, which is an appalling lack of loyalty to his constituency. Perhaps my mental model of a senator is flawed, but shouldn’t they be their state’s biggest fans? And with enough affection for their home state to return after they’re done instead of cashing in?