In Texas, 47-year-old Mexican citizen Rubén Ramírez Cárdenas died Wednesday evening after prison officials injected him with a single lethal dose of the drug pentobarbital. Cárdenas’s execution came two decades after he was convicted of murdering his 16-year-old cousin. The execution came over the strong objections of Mexican diplomats who say Texas violated Cárdenas’s due process rights, failed to consider conflicting testimony by witnesses at his trial and refused to allow new DNA testing.