Can Trump declare a National Emergency to build the wall? Of course... Obama declared 12, W declared 13, Clinton declared 17. Some of these National Emergencies are still in effect.  Info on POTUS’s declaring National Emergencies. Disregard the negative tone toward DJT. The Facts are correct.  https://www-m.cnn.com/2017/08/12/politics/national-emergencies-trump-opioid/index.html?r=https%3A%2F%2Fduckduckgo.com%2F https://en.m.wikipedia.org/wiki/National_Emergencies_Act