In fact, this group has become the Achilles tendon of the the GOP, they will hobble every piece of legislation that doesn't kiss their greedy, social conservative asses. That's right, these are the people who totally hate Planned Parenthood among a litany of other things. They are uncontrollable.
And if the Idiot in the White House wants to push any legislation through Congress, he's going to need to bend to their will... or else get remove them from power. In fact, if the GOP had any intelligence (which doesn't seem likely) they should have already started working with possible candidates who are less... strident in their political beliefs. Of course we know that ain't going to ever happen. The Republicans are too desperate for their votes in order to stay in power.
So, for right now, the American Freedom Caucus members are Anti-heroes. Isn't it nice to know that they might actually be good for something?