Nancy Pelosi is about to face the biggest challenge of her speakership

8:48am PST - December 6th, 2019    nancy pelosi - CNN

Nancy Pelosi's place in the history books is already secure. She will always be the first woman ever to serve as speaker of the House -- and the first woman to do so twice. She helped usher the first major overhaul of the US health care system in decades thro…