Texas senator accuses MAGA rival of illegally campaigning with public resources

A new episode of drama is flaring up in the fiercely contested Republican U.S. Senate primary in Texas, where incumbent Sen. John Cornyn is accusing his highest-polling challenger, Attorney General Ken Paxton, of abusing his official powers to write a 74-page campaign ad masquerading as a legal opinion.

Paxton, a far-right firebrand who previously tried to help President Donald Trump overturn the 2020 presidential election, announced the opinion on Monday. The opinion, timed for Martin Luther King Day...