Today, the U.S. on the three-drug combination used in Oklahoma executions.
At issue is whether the use of one of the drugs, , constitutes cruel and unusual punishment, since it is not proven to prevent the person being executed from feeling pain.
Texas' method of execution is different from Oklahoma's.
The Texas Department of Criminal Justice (TDCJ) oversees Texas executions. TDCJ spokesperson Jason Clark says that unlike Oklahoma's three-drug combination, "Texas utilizes a single lethal dose of Pentobarbital."
The Supreme Court is not looking at Pentobarbital today, just Midazolam. But Texas' supply of Pentobarbital is running low � there's only enough for one more execution, Clark says. The TDCJ has said it may consider using other drugs in its executions � potentially Midazolam � so the case could have some effect on how Texas carries out lethal injections in the future.
Many things are changing in the way Texas administers the death penalty. Beyond the drugs, the number of executions in Texas has gone down significantly since it peaked in the year 2000. That year, there were 40. Last year, there were 10.

Robert Dunham with the in Washington, D.C., says changes on death row are sweeping the nation. "It looks as though America may be outgrowing the death penalty," Dunham says.
He points to approval for the death penalty at its lowest point in 40 years and to some that could be used in executions.
"Any way you look at it," he says, "the death penalty seems to be failing as a public policy, and the American public is beginning to react to it that way."
The execution of Robert Pruett at Texas' Huntsville facility was scheduled for Tuesday, but it was for further DNA testing. The next Texas execution, , is set for May 12.