Senate Republicans on Friday blocked advancing a House-passed bill that would form a 9/11-style commission to investigate the Jan. 6 Capitol breach. Senators voted 54-35 on the measure, falling short of the 60-vote threshold to avoid a filibuster. Republican Sens. Mitt Romney (Utah), Ben Sasse (Neb.), Lisa Murkowski (Alaska), Susan Collins (Maine), Bill Cassidy (La.), and Rob Portman (Ohio) joined all Democrats in voting on the measure. Other than Portman, the six GOP senators all voted to convict former President Donald Trump during his second impeachment trial. Republican Sens. Pat Toomey (Pa.) and Richard Burr (N.C.), who voted to convict Trump during the trial, did not cast votes in favor of the Jan. 6 commission. The vote came just a day after Senate Minority Leader Mitch McConnell (R-Ky.), on the Senate floor, urged his caucus not to support the legislation and suggested it was merely a partisan effort from Democrats. McConnell, …