Marco Rubio Runs New TV Ad in Iowa for Joni Ernst

U.S. Sen. Marco Rubio, R-Fla., continues to stay active in Iowa, home of the first presidential caucus.

Having endorsed Iowa state Sen. Joni Ernst earlier in the month, Rubio is now running a new TV ad for her with his Reclaim America PAC as she continues her bid for the U.S. Senate seat currently held by the retiring U.S. Sen. Tom Harkin, D-Iowa.