RB i say this with all due respect, and based on your posts that is very little.
You RB do NOT dictate to the Congress how things works when neither party has a big enough majority to not require bipartisan votes.
You seem like you were spoiled as a child and grew up a petulant child, telling others how things work when you have ZERO power to dictate anything but you still think you are going to get your way
Even the Magats, in the House do not follow your path and they are constantly using their power (their votes) to force even other Republicans to add in their priorities or telling them nothing will pass. That is HOW THINGS WORK RB.
If the Republi'cans' refuse all the border gains NOW thinking when Trump gets in later the Dems will give him better deals, that just shows how stupid you are as even the very conservative republican border hawks have said there will never be a border deal this good again.
So you take this deal, and then fight to make it even tighter in Trumps next term (should it come) if you are smart. BUt you are not smart so you will refuse it like a petulant child saying 'Noooooo, only MY PRIORITIES and no one elses', thinking that is how gov't works outside super majorities.