Alan Simpson, a longtime Republican senator from Wyoming who championed bipartisan solutions and steadfastly advocated for a moderate blend of conservatism, has died. He was 93.

Alan Simpson, an old school moderate Republican senator who helped craft major U.S. immigration reform in 1986 and made friends across the aisle, died on Friday in Cody, Wyoming, his family said in a statement.

Pushing the 1986 immigration reform bill through Congress — his major legislative accomplishment — was like “giving dry birth to a porcupine,” he quipped.