An emergency declaration by Trump will lead to lawsuits. Lots of them.

They will file suit in numerous jurisdictions — certainly within the U.S. Court of Appeals for the 9th Circuit on the West Coast, in U.S. District Court in Washington and maybe even in New York. That’s been the pattern in the hundreds of lawsuits, many of them successful, brought against the Trump administration, the idea being that some judge somewhere will block the wall…

White House lawyers have told Trump he could reprogram money without calling an emergency, according to the person familiar with the discussions who, like others, spoke on the condition of anonymity to discuss internal deliberations. But Trump is concerned there is not enough money in those pots to show meaningful progress on the wall and has been determined to declare an emergency, partially for fear of looking weak, the person familiar with the matter said.