It's official. Texas has just executed Humberto Leal by lethal injection. Leal was found guilty of the brutal rape and bludgeoning (repeated blows to the head with a chunk of asphalt) of a sixteen-year-old girl in 1994. May God have mercy on his soul, because I cannot.
The Obama Department of Justice tried to stay the execution by a direct appeal to the Supreme Court, which was rejected (as was the identical attempt in 2008 with Medellín vs Texas) due to the finding that international law has no binding effect unless Congress enacts US laws to enforce it, and the President has no power to enforce such international laws or treaties absent action by Congress. I expect that the DoJ was already aware of Medellín, but persisted in the appeal for political reasons.
Likewise, Obama publically appealed to Governor Rick Perry. Here as well, Obama surely knew that Perry would reject the appeal, because Perry also fought President Bush over the same issue with the afore-mentioned Medellín – and won.