Yes, Trump can declare an emergency

On the roster: Yes, Trump can declare an emergency - New border wall fight is Trump vs. Texas landowners - Harris eyes MLK day for kickoff - Steve King draws primary challenger amid uproar - Clean up in the produce department

YES, TRUMP CAN DECLARE AN EMERGENCY
Congress did not get to be so terrible overnight.

Feckless and incompetent, our legislative branch stumbles forward without direction or even a modest impulse toward self-preservation. But unlike the proverbial turtle on a fence post, it mostly got there by itself.

It may be dismaying for Democrats to hear just now, but President Trump most assuredly has the authority to declare a national emergency concerning matters of immigration. He has that authority because the Congress explicitly gave such power to the executive branch in 1976.