On Wednesday, officer Jeronimo Yanez was charged with second-degree manslaughter for the shooting death of Mr. Castile, a black motorist who was legally armed.
While the former attorney general faced criticism for controversies that include the raid of the Branch Davidian compound and seizure of Elián González, she was also known for her staunch independence.
Prosecutors and the defense begin selecting 12 jurors out of a potential pool of 512 on Monday. Those seated will decide whether Dylann Roof's alleged hate crimes warrant punishment by the death penalty or life in prison.
The US Supreme Court did not give a reason for the stay, which it ordered on Thursday. Thomas Arthur's lawyers have been fighting the use of a controversial execution drug.
The government levied the fine under the Clery Act, saying that Penn State failed to be sufficiently open about campus safety issues.