As corporations line up to endorse opposition to state-level voting reforms, the country’s largest corporate lobby announced Tuesday that it opposes a Democratic bill aimed at expanding voting access.

The U.S. Chamber of Commerce sent a letter to senators this week urging them to vote against S.1, or the “For the People Act” — a sweeping piece of legislation that would federalize many of the ways states run their elections and impose new campaign finance and redistricting rules.