Texas Attorney General Ken Paxton fired back at U.S. Senator John Cornyn days after he rebuked Paxton for letting Harris County Judge Lina Hidalgo "off the hook," saying his office did not have the evidence needed to further the investigation into three of Hidalgo's former aides.

Texas Attorney General Ken Paxton's decision to run for the U.S. Senate continues one of the most consistent streaks in Texas politics. Every Texas attorney general since 1972 has used the position as a springboard to higher office by either running for governor or the United States Senate.

Texas Attorney General Ken Paxton’s decision to challenge Sen. John Cornyn sets up what’s likely to be a bitter and expensive Republican primary – and a battle for President Donald Trump’s endorsement.