<p>U.S. President-elect Donald Trump said on Sunday he will rename Denali, Alaska natives' name for North America's tallest mountain, after William McKinley, the 25th U.S. president who was assassinated in 1901.</p><p>Democratic former President Barack Obama in 2015 officially renamed the mountain as Denali, siding with the state of Alaska and ending a decades-long naming battle. The peak had been officially called Mount McKinley since 1917.</p>