Several Senate Republicans on Monday evening expressed worries about how the commission will be formed, whether it should have a broader scope and if it might hinder the work of congressional committees that are already probing the pro-Trump riot at the Capitol. With the use of the filibuster power, the Senate GOP can demand changes or bottle up the legislation altogether. “They’re going to have to broaden the inquiry in order to get 60 votes,” said Sen. Chuck Grassley (R-Iowa). “There’s more things wrong in this country than just [what] happened on January 6th.” Speaker Nancy Pelosi has scheduled a vote this week on a deal forged with Rep. John Katko (R-N.Y.) establishing a 10-member commission with subpoena power to investigate the Capitol insurrection. Yet House and Senate GOP leaders haven’t signed on. The House is also proceeding with a $2 billion security supplemental bill with uncertain prospects in the Senate.