They're FOR one thing: taking the easiest path to re-election and whatever stances come with it, that week. That's what they all learned from Trump. Your principles do not matter. Just say what the people who elect you want you to say and get elected. Then rob the country blind and hope you build up enough capital until you get caught (like Menendez).
And it turns out, the details of conservative policies are sort of boring, fantastic conspiracies with blood sucking Democrats are far more engaging.