The New York mayor gave a solidly pro-immigration speech, flanked by recently naturalized citizens, hours before the president plans to give his own address at Mount Rushmore.

President Donald Trump will give a speech honoring America’s 250th anniversary before the likenesses of four predecessors Friday night.

On the eve of the nation’s 250th birthday, President Donald Trump used his address Friday night at Mount Rushmore National Memorial in South Dakota to allege that there is “a resurgence of the communi...