AP Photo/Susan WalshInternational events could be caused by the 2021 Stanley Cup Final.Canadian Prime Minister Justin Trudeau offered to take a "friendly bet" with President Joe Biden Monday, based on the outcome in the series between the Tampa Bay Lightning (or Montreal Canadiens) games. Biden accepted the offer:The terms of this bet are still unclear. If Tampa Bay wins, the U.S. may be able to retroactively claim Wayne Gretzky.Biden was on his way to a quick win when the Lightning took a 2-0 lead in Game 2 on Monday.