A federal appeals court has rejected an appeal from a Mexican man on death row in Texas for the slayings of his wife and two children at their Rio Grande Valley home more than 24 years ago. The 5th U.S. Circuit Court of Appeals on Thursday upheld a lower court ruling that said Robert Moreno Ramos, 62, can't file another appeal claiming he wasn't told he could get legal help from the Mexican government under an international treaty when he was arrested for the 1992 killings.