Barron Trump, the youngest son of former President Donald Trump, made his first-ever public appearance at his father’s rally on Tuesday. What Happened: The rally took place at one of Trump’s Miami-area golf courses. The former President called his 18-year-old son to stand up, to which Barron responded by pumping his fist a few times. “Welcome to the scene, Barron,” Trump announced, reported The Hill. See Also: Biden Vs. Trump Matchup Shows President Now Trails By Smallest Margin In Key Swing States, Poll Finds Democrats Have Best Chance With This Candidate The rally was held amid growing specu…