Midterm Elections Produce Renewed Challenges on National-Security Committees for Trump

House Intelligence Committee Chairman Devin Nunes, and ranking member Rep. Adam Schiff speak to the media about Committee's investigation into Russian interference in the U.S. presidential election, at the U.S. Capitol on March 15, 2017. Mark Wilson/Getty Images

The midterm elections have produced a changed leadership picture, and renewed challenges for President Donald Trump, on the national-security committees within Congress.

With the switch to Democratic control in the House, a number of senior Democrats, known in congressional parlance as “ranking members,” will ascend to the chairmanships of their respective committees and subcommittees with the swearing-in of the new Congress in January.