It was a "manager's amendment" from the House Judiciary Committee, meaning that it was a majority consensus of whole committee.
Here are the 23 Republican members on the committee:
Bob Goodlatte, Virginia, Chairman
Jim Sensenbrenner, Wisconsin
Howard Coble, North Carolina
Lamar S. Smith, Texas
Steve Chabot, Ohio
Spencer Bachus of Alabama
Darrell Issa, California
Randy Forbes, Virginia
Steve King, Iowa
Trent Franks, Arizona
Louie Gohmert, Texas
Jim Jordan, Ohio
Ted Poe, Texas
Jason Chaffetz, Utah
Tom Marino, Pennsylvania
Trey Gowdy, South Carolina
Mark Amodei, Nevada
Raúl Labrador, Idaho
Blake Farenthold, Texas
George Holding, North Carolina
Doug Collins, Georgia
Ron DeSantis, Florida
Jason T. Smith, Missouri
Here are the 23 Republican members on the committee: