Jordan Chiles, the U.S. gymnast who was stripped of her Olympic bronze medal at the Paris Games, filed an appeal Monday challenging the decision in the Federal Supreme Court of Switzerland.The big picture: The U.S. Olympic and Paralympic Committee filed a letter of support in Chiles’ appeal against the Court of Arbitration for Sport’s (CAS) decision to revoke the medal in the women’s gymnastics floor event and award it to Romanian gymnast Ana Bărbosu, per a statement from her attorneys.