It's not accident that in the last election, the RNC's two favored candidates were "illegal immigration is an act of love" Jeb Bush and gang of 8 Marco Rubio as the pinch hitter. These were the two Republican candidates most dedicated to open borders and a de facto North American union, whereby Mexico and Central America can continue to use the US as the dumping ground for their surplus populations. The GOP establishment elites would be laughing all the way to the bank with this demographic displacement, since they get the cheap labor and none of the immediate costs in their gated communities. It never occurred to them that it's also a recipe for losing elections in the future, because no matter how much GOP establishmentarians pander to non-whites, Democrats are so much better at that game.
In every election since the last amnesty up until Trump broke through the Bush blockade at the RNC, the Bush League had prevented US from electing anyone who would side with US and the rule of law.
Every GOP nominee for President was an amnesty/open borders advocate.
It was not accidental, it was intentional.