The mistake Trump made was to underestimate the pussification of the American male, in this case specific to republicans in congress. Sure it would have been, still would be nice to declare a national emergency, lock the border down and dare the do nothing congress to put him out. That is exactly what they would do with Republicans in lockstep with democrats. I put the blame squarely where it belongs, right in the laps of congress.
Yes of course they're despicable and should be blamed, but Trump's promises didn't come with asterisks about congress. It was plain as day that the establishment republicans were as much in favor of open borders as the dems, just for different reasons. Trump has many tools at his disposal that he could have used either to force congress to do something or to do it on his own. He could have held the tax cuts hostage, or pulled troops out of Afghanistan. He hasn't even issued the EO abolishing birth citizenship that he promised before the election.
What if I told you the real pussification of the American male was scapegoating brown people with barely any rights and locking their progeny in cages for your failure in life as a man?
Marxism does not believe in nation states so I am quite surprised to learn that he doesn't want open borders.