Authors with Sen. Profession Australian Sen. Richard Di Natale sen Missouri Sen. Claire McCaskill sen Missouri GOP Sen. Rob Schaaf sen Missouri Democratic Sen. Claire McCaskill sen Minnesota Sen. Klobuchar sen Minnesota Sen. Al Franken sen Arizona Sen. John McCain sen Arizona Republican Sen. John McCain sen Arizona GOP Sen. John McCain sen Michigan Sen. Gary Peters sen Connecticut Democratic Sen. Chris Murphy sen Colorado Sen. Mark Udall sen Democratic State Sen. Katrina Robinson sen Massachusetts Sen. Elizabeth Warren sen Massachusetts Democratic Sen. Elizabeth Warren sen Democratic Sen. Joe Manchin sen Democratic Sen. Elizabeth Warren sen Democratic Sen. Cory Booker sen Democratic Sen. Amy Klobachar sen Democratic Sen. Amy Klobuchar sen 123456»