Inside the party interests cannot be a hindrance to the fight against the common enemy. Trump an enemy to them all. I think that the Democrats may make a deal with Republicans to offset Trump.
The differences between Trump and the RINOs are exaggerated. Obviously, some of the RINO senators doesn't agree 100% with Trump on issues such as deportation of illegal immigrants, US-Russia relations.etc. But as far as the most important issues are concerned (such as abortion ban, SCOTUS appointments, Obamacare.etc), all of them do agree with Trump.