Canadian singer Celine Dion “does not endorse” Donald Trump’s purportedly unauthorized use of her “My Heart Will Go On” song and accompanying video at the former president’s rally, according to a note from her management. Trump was mocked on social media after using the song, widely known as the theme song for the movie Titanic, at his campaign rally in Montana. On Saturday, Dion’s management weighed in, posting a statement from the singer’s own account on social media. Want more breaking political news? Click for the latest headlines at Raw Story. ALSO READ: 21 worthless knick-knacks Donald T…