WASHINGTON (AP) - House Republican leaders poised to revive efforts to overhaul the immigration system with new broad policy principles are facing a direct challenge from a GOP senator.

WASHINGTON (AP) House Republican leaders poised to revive efforts to overhaul the immigration system with new broad policy principles are facing a direct challenge from a GOP senator.

Sen. Jeff Sessions of Alabama delivered a 30-page package to all 232 House Republicans on Wednesday that warns against a headlong rush to change immigration laws. The Associated Press obtained a copy of Sessions' critique, which offers a point-by-point rebuttal to House GOP leaders.

Speaker John Boehner and other House leaders plan to unveil their principles Thursday at the GOP caucus' annual retreat in Cambridge, Md.

Sessions' critique provides an analysis from his staff on the Senate Budget and Judiciary committees on the negative impact to workers, taxpayers and the rule of law from immigration plans moving through Congress.