It's all pretty surprising for the Washington state Republican, who wasn't even married when she first got elected to Congress in 2004.
"I went through a time when I thought, 'Well, maybe I'll be single for the rest of my life,' because I wasn't getting a lot of dates," she told TODAY.com.
The highest ranking GOP woman in Congress, McMorris Rodgers currently chairs the U.S. House Republican Conference, the body responsible for electing that chamber's leadership. When she announced her pregnancy, she promised that neither her political duties nor her re-election campaign would be affected.
"I think it's becoming more and more accepted," she said. "As more women serve in Congress, you'll see it will become more common for women to have babies while they're serving. It'll become easier in that people probably just won't think as much about it."
Image: Rep. Cathy McMorris Rodgers, via http://mcmorris.house.gov/