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By Reity O’Brien, Center for Public Integrity supremes

Between legalizing gay marriage and sparring over campaign finance limits, the U.S. Supreme Court kept busy — and made money — outside the marbled halls of One First Street last year.

All but one of the nine high court justices earned teaching income or book royalties in 2013, hauling in a quarter of a million dollars for their work shaping young legal minds in the classroom or through the written word.