Swanigan qualified for the 2014 U17 World Championship Team, beating out twenty other players vying for a spot to make the 12-man squad. Swanigan played in the U17 World Championship Game. The team finished with a 7–0 record and earned a gold medal in Dubai, United Arab Emirates, extending the USA's total record at the U17 World Championship Game to 23–0. He finished the series with 8.0 points per game and 5.7 rebounds per game, and was the most efficient player on the U17 team, with a 69.6 shooting percentage.
