A Buddhist monk "should not have to choose between his health and performing sacred religious duties" for an inmate set to be executed, the civil liberties group argues.
The justices rejected an appeal from four inmates who were convicted of killing children.
The move comes after a legal battle over the plan to resume federal executions for the first time since 2003.
It's one of just two known cases where a death penalty verdict has been delivered remotely. Rights group lambasted the video judgment as inhumane.
“My heart is filled with gratitude," a state senator wrote after Gov. Jared Polis signed the bill.
The Charleston church shooting resulted in the first-ever death sentence for a federal hate crime.
John Gardner is the first inmate put to death this year in Texas, the nation’s busiest capital punishment state.
The Justice Department is now taking its fight to reinstate the federal death penalty up to the Supreme Court.
The decision by the Texas Court of Criminal Appeals means the death row inmate no longer has an execution date.
The demonstration is part of a last-ditch effort to have Rodney Reed's case reevaluated in light of new evidence before his execution, scheduled for Nov. 20.