WASHINGTON (Reuters) -The U.S. Supreme Court's ruling on presidential immunity leaves Judge Tanya Chutkan to determine how much of the federal criminal case involving Donald Trump's efforts to overturn his defeat to Joe Biden in the 2020 election can survive. The 6-3 ruling on Monday, with the court's conservatives in the majority, declared that Trump has broad protection from criminal prosecution for actions that fell within his official responsibilities as president under the U.S. Constitution. The court delegated to Chutkan, a judge on the U.S. district court in Washington, the complex task of determining how to apply that immunity in the four-count criminal indictment obtained last year by Special Counsel Jack Smith.