Sen. Chuck Grassley of Iowa, one of the top Republicans focused on holding Big Tech companies accountable, is working with Democrats on an antitrust bill that would significantly boost supporters of bipartisan antitrust legislation in Congress.

Grassley, the ranking member on the Senate Judiciary Committee, is in talks to co-sponsor antitrust legislation with Democratic Sen. Amy Klobuchar of Minnesota, the chairwoman of the committee in charge of regulating tech giants such as Facebook and Google.