You are clearly advocating for something beyond a more appropriate processing of green card and visa holders. In fact you seem to be arguing that the US has so

You are clearly advocating for something beyond a more appropriate processing of green card and visa holders. In fact you seem to be arguing that the US has some sort of obligation to accept millions of immigrants, refugees, and 'undocumented migrants' because ...? The US hasn't had an open border policy like that for over 100 years. Freaking out about Friday's policy changes with overwrought and hyperbolic language isn't very persuasive towards a different policy. There is a very reasonable argument based on due process that the administration's implementation of these visa changes was bungled terribly and that it will create some considerable hardship for people in-transit or out-of-country. I hope that this situation gets quickly addressed and that the administration takes a bit more care in its administrative logistics going forward.