KEY POINTS
  • President Donald Trump says Democrats who didn't applaud his State of the Union are "un-American" and could be called "treasonous."
  • Relations between the two major American parties are already delicate as Congress tries to strike government spending and immigration deals.
U.S. Rep Steny Hoyer, D-Md., and U.S. House Minority Leader Nancy Pelosi, D-Calif., watch during the State of the Union address in the chamber of the U.S. House of Representatives January 30, 2018 in Washington, DC.

President Donald Trump on Monday ripped into Democrats who held their applause during his first State of the Union address, saying the behavior could amount to "treason."

In a speech in Ohio promoting the GOP tax law and Republican midterm candidates, the president questioned why Democrats in Congress refused to clap during many moments of his speech. Most of the caucus sat stone-faced during Trump's address last week as he promoted Republican economic policies and pushed for immigration changes that Democrats largely oppose.