Unidentified relatives of Texas death row inmate Humberto Leal react after hearing news of his execution in Guadalupe, on the outskirts of Monterrey, Mexico Thursday July 7, 2011. Relatives of Leal gathered to pray and hope that Texas governor, Rick Perry, spare the convicted murderer's life. Despite appeals from President Barack Obama and other legal and foreign policy experts, Leal was executed by lethal injection at the Texas death chamber in Huntsville for the 1994 rape and murder of a 16-year-old San Antonio girl. (AP Photo/Hans Maximo Musielik)

Associated Press
Unidentified relatives of Texas death row inmate Humberto Leal react after hearing news of his execution in Guadalupe, on the outskirts of Monterrey, Mexico Thursday July 7, 2011. Relatives of Leal gathered to pray and hope that Texas governor, Rick Perry, spare the convicted murderer's life. Despite appeals from President Barack Obama and other legal and foreign policy experts, Leal was executed by lethal injection at the Texas death chamber in Huntsville for the 1994 rape and murder of a 16-year-old San Antonio girl. (AP Photo/Hans Maximo Musielik)
Unidentified relatives of Texas death row inmate Humberto Leal react after hearing news of his execution in Guadalupe, on the outskirts of Monterrey, Mexico Thursday July 7, 2011. Relatives of Leal gathered to pray and hope that Texas governor, Rick Perry, spare the convicted murderer's life. Despite appeals from President Barack Obama and other legal and foreign policy experts, Leal was executed by lethal injection at the Texas death chamber in Huntsville for the 1994 rape and murder of a 16-year-old San Antonio girl. (AP Photo/Hans Maximo Musielik)
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