Cook Political Report: How Does the "Blue Wall" Look for 2020?

On Friday, to avert another government shutdown, President Trump signed a bipartisan spending package that he argues did not include enough funding for a border wall.

To secure that funding, he declared a national emergency.

In advance of Trump’s official announcement, House Speaker Nancy Pelosi spoke out against the idea of an emergency declaration.

Is declaring a national emergency in this situation allowed? Unprecedented?

To get a better understanding of this use of executive power Amy Walter spoke to Dr. Barbara Perry, the director of presidential studies at the University of Virginia's Miller Center.