USCF Official Rules of Chess, 4th Edition, p.29, 13G, "Players must give notice if withdrawing or skipping a round   A player who does not notify the Tournament Director well in advance of the inability to play in any round and then defaults the game under 13D should be ejected from the tournament, and may be fined a sum up to the amount of the entry fee, payable to the organizer. The player may be barred from any of the organizer's tournaments until the fine is paid. On request, the player may be retained in or readmitted to the tournament at the director's discretion.