Unfortunately, I think this is the point. They want to push the needle so that even legal immigration is restricted or difficult (unless you happen to pay them directly)
Yes and one step further: it is attention, ultimately to extract wealth.
Trump is a distractor and can make a whole country forget about <insert recent insanity>. Passing a judge is a minor detail here.
Of course it is stupid to talent-leak your country but he just needs you to forget about $LATEST_SCANDAL. That's the value for him. Trump doesn't care about the future of US.
And distracting does not take skill. It only takes a mind poisoned to the core. He will throw anything in his chaos machine to extract wealth. And US has an endless supply of those juicy valuables and values that you can sacrifice and shed.
Why don't they just say what they mean, and ban immigration completely? Are they trying to trick most immigrants into leaving voluntarily so they can deny re-entry?