Trump is pushing Republicans to fall in line behind his agenda. Chip Roy could stand in the way

As President Donald Trump attempts to muscle his GOP agenda through a narrow House majority, Rep. Chip Roy is perhaps the most important holdout to win over. He may also be the toughest.

​ As President Donald Trump attempts to muscle his GOP agenda through a narrow House majority, Rep. Chip Roy is perhaps the most important holdout to win over. He may also be the toughest. Read More Breaking News, Latest News and Videos | CNN