WASHINGTON (AP) — Republican lawmakers mounted their first official challenge to Joe Biden's presidential election win Wednesday, objecting to state results from Arizona as they took up Donald Trump's relentless effort to overturn the election results in an extraordinary joint session of Congress.

Rep. Paul Gosar of Arizona, flanked by Sen. Ted Cruz of Texas, rose to object to the typically routine acceptance of electors.

The objection now forces two hours of debate in the House and Senate, sending lawmakers away to separate deliberations.

Trump's allies are acting out the pleas of supporters...