In 1978, the U.S. changed their rules to allow men to once again compete with women. Rules in other countries varied; in the UK, men were prohibited from competing until 2014, while in France, Benoît Beaufils was allowed to competed at national events in the 1990s. American Bill May was a top competitor in the late-1990s and early-2000s. He medalled in several international events, including the 1998 Goodwill Games. However, male competitors were barred from top competitions, including the World Aquatics Championships and the Olympics. However, at the 2015 World Aquatics Championships, FINA introduced a new mixed duet discipline. Both May and Beaufils returned from decade-long retirements to represent their countries. Among their competitors were Russian Aleksandr Maltsev and Italian Giorgio Minisini, both over 15 years younger than May and Beaufils. Pairs from ten countries competed in the inaugural events. The 2016 European Aquatics Championships was the first time men were allowed to compete at the European Championships. While men are allowed in more events, they were still barred from competing in the 2016 Summer Olympics. FINA did propose adding the mixed duet competition to the 2020 Summer Olympics.