Rep. Pete Sessions's (R) north Dallas district has become ground zero for the fight over health care and pre-existing conditions, the dominant issue in many contests across the country that could help determine the next House majority.
Sessions, 63, has been in Congress for 22 years, but has seen the 32nd District become increasingly diverse and more competitive. He won reelection in 2016 without a Democratic challenger even as Hillary Clinton won the district over President Trump by nearly 2 points.
