Leach said over 80 legislators signed a letter "calling for the pause button into Roberson's execution," believing his testimony is vitally necessary. The subpoena came after the

A judge has granted a request from Texas lawmakers to delay the execution of a man scheduled to become the first person in the U.S. put to death for a murder conviction tied to a diagnosis of shaken baby syndrome.

A Texas House Committee voted to subpoena Roberson after his scheduled death amid a flurry of eleventh-hour legal maneuvers.