Nonetheless, after 2012, Fabien moved to the United States and began competing as an American Canoe Slalom Athlete. Fabien began training with the Potomac Whitewater Racing Center (a U.S. Olympic Center of Excellence). Subsequently, at the 2014 World Championship in Deep Creek Lake, he won the gold medal in C1, becoming the first male slalom canoeist to win the World Championship title in C1 and K1.