When The President Went To The Supreme Court

Ed. Note: Welcome to our daily feature Trivia Question of the Day!
Who was the most recent President of the United States to have argued before the Supreme Court?
Hint: The relevant case was a First Amendment case, and the Court held that absent a finding of malicious intent on the part of a publisher, false or misleading statements by the press are protected speech.
See the answer on the next page.