Dems want to push him into declaring a national emergency, then sue to block it and impeach him for trying to usurp the role of Congress.
They may indeed use this tactic. It will not have the support of the people behind it though. The people may be uninformed, misguided, or ignorant but not stupid. This has been played out in the media so everyone can see how the obstructionist communist dems have been a brick "wall" in negotiating for better border security which involves a real barrier.
Frankly, at this point, I think the communist dem pols like UpChuck and Piglosi along with the two or three muzzie congressmen should be thrown in Gitmo for their crimes of treason. Mad Maxine and Al Greene too.
Our biggest problem other than the commie dem pols/rats is the enemedia. They have gone full communist and dropped all pretense of being unbiased. They are the enemy of all freedom loving Americans.
I don’t think they will win if they impeach. Americans wouldn’t want him impeached for this. If he doesn’t do it now, it will never be done. The courts will delay but Trump must do everything n his power to build the wall.