of drugs, of human beings being trafficked all over the world. they re coming through and we have an absolute crisis and of criminals and gang members coming through. it is national security. it s a national emergency. [ indiscernible ]. we ll be letting you know fairly soon. all right. so if congress fails to secure funding for a border wall president trump says he may call a national emergency to actually get it build. that idea is getting major pushback from democrats. watch this. really threatening talk from the president that he doesn t have the power to execute. look, if harry truman couldn t nationalize the steel industry during wartime, this president doesn t have the power to declare an emergency and build a multibillion dollar wall on the border. so joining me now to break all of this down, the legalities of the president s emergency powers is lawrence lesic, harvard law school professor and christine greer at fordham,