Richard Grenell threatened to sue musician Chuck Redd for one million dollars after the performer canceled a concert following the renaming of the Kennedy Center to include Donald Trump.The venue was rebranded as the Donald J. Trump and John F. Kennedy Memorial Center for the Performing Arts after a unanimous vote by a board appointed by Trump.Legal experts and Joyce Beatty argue the modification violates a 1964 federal law that designates the site specifically as a memorial to John F. Kennedy.