I doubt outright imploding, but, definitely certain elements that they need the votes of to pass legislation are probably telling his people they won’t vote for the bill unless certain things are removed, things that other elements said were mandatory for them to vote for the bill. It only takes a handful of intractable issues like that to prevent them having the numbers to pass legislation. Unless the senate agrees to pass the exact version the house did, it’s going to have to go back to the house again, and there are a lot of representatives who have buyers remorse after realizing what was in it.

I think the strategy was basically to go to everyone they needed to vote for it, ask them what they wanted in it. And just welded all that together along with the stuff trump wanted, tell everyone what they asked for was in it, then rush it through before anyone could take a close enough look to see anything they would object to, which worked for the house, but has failed in the senate by the fact it hasn’t passed yet and that certain figures like Rand Paul have objected to it.