Eisenhower appointed five justices of the Supreme Court of the United States. In 1953, Eisenhower nominated Governor Earl Warren to succeed Chief Justice Fred M. Vinson. Many conservative Republicans opposed Warren's nomination, but they were unable to block the appointment, and Warren's nomination was approved by the Senate in January 1954. Warren presided over a court that generated numerous liberal rulings on various topics, beginning in 1954 with the desegregation case of Brown v. Board of Education. Robert H. Jackson's death in late 1954 generated another vacancy on the Supreme Court, and Eisenhower successfully nominated federal appellate judge John Marshall Harlan II to succeed Jackson. Harlan joined the conservative bloc on the bench, often supporting the position of Associate Justice Felix Frankfurter.