Of course not. That power lies solely within the Judicial Branch.
(sarc or no sarc. can’t decide)
Well, sadly on that one I share your cynicism.
I think Trump would be wise not to expend too much political capital on the emergency. Build the wall with the billions he has and put the military on the border. Lay barbed wire and barriers. Go after the NGO’s. And then wrap the Dems fake Constitutional concerns around their necks like a gasoline filled tire...