(Reuters) – U.S. Senator Lindsey Graham asked the Supreme Court on Friday to halt a lower court’s order compelling him to testify to a special grand jury in Georgia investigating whether then-President Donald Trump and his allies attempted to overturn 2020 election results in the state. Graham, a Republican from South Carolina, filed the emergency application after a federal appeals court on Thursday denied his request for protection from testifying. The application would be considered by Justice Clarence Thomas, who handles emergency motions from Georgia. Fulton County District Attorney Fani …