The President has the authority to deny "grants."  The rest is unclear and I'm sure will be ultimately determined by the SCOTUS.  As I said I'm not going to argue it here.  Just because you can, doesn't mean you should.  You sound like the NFL players who say, It's my right.  True.  But their fans are leaving in droves.  They can cling to their rights as the NFL sinks to the bottom of the ocean.