FILE - In this May 1, 2018, file photo, Texas Attorney General Ken Paxton speaks at a news conference in Austin, Texas. Civil rights groups are asking Texas officials to walk back a letter that questioned the citizenship of thousands of voters and prompted President Donald Trump to renew unsubstantiated claims of rampant voter fraud. Paxton told supporters in a fundraising email Monday, Jan. 28, 2019, that many of those people could have become citizens and voted legally. (Nick Wagner/Austin American-Statesman via AP, File)