<p>The Obama administration is taking the unusual step of asking the U.S. Supreme Court to stop Texas from executing a Mexican citizen who was convicted and sentenced to die for the rape and murder of a 16-year-old girl.</p>
<p>The administration is asking the court to delay the July 7 execution of Humberto Leal, 38, for as long as six months to give Congress time to consider legislation that would directly affect Leal's case.</p>