The simple explanation is that they want amnesty, they want business as usual baseline budgeting, they want unending CRs, they want lots of the same things as the Democrats because both of them are institutions dependent on a large federal government with DC the center of the universe.
They want the same thing as Democrats BECAUSE THEY ARE DEMOCRATS. The GOP is a wing of the Democratic party- who get elected on the premise that they aren't Democrats, and who serve as the Democratic Party's Emmanuel Goldstein that they can direct their followers enmity and hate toward and who they can use to implement those agenda items that are not popular with their normal "free-shyt army" of followers. Don't blame us, blame
Emmanuel Goldstein the GOP for taking us to war with EastAsia. They are the bad guys. They are the bad guys subjugating women, creating poverty, etc. And the GOP is happy to go along with it, because they get to walk the same halls of power and enjoy the same benefits as the Dems do while they are there, and they don't have to do anything but play the bad guy and absorb the anger of the country till the next great push leftward.
They, have, of course, tried to get the Independent Minded conservatives to form a non-thinking hive mind around Red-Team, and had some limited success at that, but by and large, the GOP can only win on being not Democrat. My mother was surprised when I told her I had never voted for a candidate - only against the Democrat. The GOP leadership knows this, and the ruse is wearing so thin now they obviously just don't care. The game is stupid. There is no point. Let Hilary be president. Let her own the collapse ( which cannot be adverted in any case) I am not voting for another Big Government Statist Democrat in red team uniform - another Bush, another Romney, another McCain. The ruse has to end, and the GOP has to die before ANYTHING can be done.