WASHINGTON (Reuters) - The head of the largest conservative group in the U.S. Congress, Representative Bill Flores of Texas, said he could not back Republican Donald Trump for president at this time, CNN reported on Wednesday.

Flores, the head of the Republican Study Committee in the House of Representatives, told CNN he was incredibly angry about comments that the presumptive Republican presidential nominee made about U.S. District Judge Gonzalo Curiel.

(Reporting by Timothy Ahmann; Editing by Doina Chiacu)