Ken Paxton's decision to run for U.S. Senate against John Cornyn could set off a crowded GOP primary for Texas Attorney General.

It comes after state officials launched five investigations into the East Plano Islamic Center's project in recent weeks.

Texas Attorney General Ken Paxton also requested documents from local officials on the proposed development in Collin County.

DALLAS — Texas Republicans will have their most consequential primary contest in 15 years, when incumbent Sen. John Cornyn tries to stave off a challenge from Texas Attorney General Ken Paxton. The ...