With the backing of former judges, prosecutors and diplomats from across the country, lawyers are asking Texas Gov. Rick Perry and other state officials to delay the scheduled July 7 execution of Humberto Leal Garcia. The case echoes the dispute involved in the 2008 Supreme Court decision in Medellin v. Texas, and also implicates pending action in Congress.

Leal is a Mexican national arrested in 1994 on suspicion of murder who was never told that he had a right under an international treaty to contact the Mexican consulate for legal assistance. It was not until he was on death row that a fellow inmate gave him the address of the Mexican consulate.