On the anchor baby thing, most likely what will happen is Trump will go silent about this two weeks from now and the system will still consider "magic soil" Paco a full fledged US citizen.
Even if the US gov't does do a 180 on this and yanks anchor baby citizenship, the congress will immedietely give retro active US citizenship to all these fuckers ASAP, theres precedent with this concerning native Americans from a SCOTUS case in the 1920s.
Then congress will sneak in some bill that explicitly unambigously allows for anchor babies again moving forward.
And that'll be that.