I'm sure you'd do a much better job
Trump as Commander in Chief has the constitutional power to order the Army Corp of Engineers to build a wall along our Southern border for whatever reason he deems appropriate. He can order funds already allocated to the Pentagon to be used. He does not need a “state of emergency”. The real problem is that he has surrounded himself with old globalist generals and neo cons who scuttle his policies and instincts. He still does not know how to wield power.
I'm sure you'd do a much better job
Unfortunately, at this level, you are probably correct.
Yet he is putting up a better fight for us than anyone has since Reagan. God bless him.