That may end up being the 'key'. Roberts has caused a head scratching. Where is the Constitution?
Why assume this question of Emergency Declaration can be even accepted by SC?
The authority for the ED is reserved to the POTUS.
The Emergency monies are Approved by Congress.
To the letter, the expenditures applied are under the words of Congress, to the very task at hand, and to the letter, to those tasked to perform it, under the Department of Defense.
I earnestly believe it is a NO Brainer. Trump is building 5.7 Billion Dollars worth of WALL.
Democrats agree, except for the theatrics used to create Fog.