HOUSTON, United States The US states of Texas and Alabama are scheduled to carry out two executions Thursday by lethal injection, despite a plea from the UN for the country to halt all executions. "We are seriously concerned by the impending execution of two men in the United States of America," said UN Human Rights Office spokesperson Seif Magango, in a statement from its Geneva headquarters. "This would follow the execution of six people in five different US states over a 12-day period last