I disagree on all three points.
We have seen the courts support Administration initiatives through some pretty tortured reasoning.
I sincerely doubt congress could withstand a "Megyn Kelly" backlash from the voters on a new President's signature issue.
And finally, I would not put it past Trump to pull an FDR on an intransigent SCOTUS.
Congress is hopelessly corrupt and will never - I mean NEVER - take illegal labor away from their sugar daddies.
They make $174,000 a year and they all retire multi-millionaires.