Stirling said conversations with drug companies to replenish South Carolina's supply of pentobarbital, pancuronium bromide and potassium chloride have repeatedly been stymied by the lack of a shield law.
The unavailability of lethal injection drugs has become a problem for many states around the country that still administer the death penalty.
SC does not have the drugs needed to carry out a scheduled lethal injection.
Stone faces the death sentence for the 1996 slaying of Sumter County sheriff Sgt. Charlie Kubala.
McMaster and South Carolina Department of Corrections Director Bryan Stirling called on the General Assembly to pass a shield law that would allow companies to sell the drugs to the state confidentially in order to avoid public scrutiny.
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McMaster and Stirling are asking the General Assembly to pass the shield law during the next session, and to act "positively and quickly" and in keeping with the desires of the people of SC for justice.
State law requires three drugs to perform a lethal injection.
Stirling said the department is still trying to get access to the required drugs with a week and a half left to do so, but they have had no success in years of looking for a new supplier.
Stirling said he warned the state's General Assembly a few years ago that SC would eventually reach this point.
Several other states, including Texas, Oklahoma, Arkansas and North Carolina, have passed shield laws to provide secrecy for companies that assist with executions.
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This would indicate that the analyst believes there is a potential upside of 11 .8% from the opening price of 2326.5 GBX. Royal Dutch Shell plc has a twelve month low of GBX 1,929.50 ($25.38) and a twelve month high of GBX 2,516.32 ($33.10).
"The easiest and quickest thing to do would be for the General Assembly to take this law up immediately and pass it", McMasters said.
SC primarily uses lethal injection and hasn't carried out an execution since 2011.
The South Carolina Supreme Court has ordered a December 1 execution for 52-year-old Bobby Wayne Stone, who was convicted of murder in the 1996 slaying of Sumter County sheriff's Sgt. Charlie Kubala.
"The people of SC have been clear in their support of justice, including the death penalty, and in order to allow that death penalty law to function through the courts is to pass this shield law", McMaster said.
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