是的，这和联邦政府没有半毛关系：

Q: Does the U.S. government fund the U.S. Olympic Team?

A: No, the federal government does not fund Team USA’s Olympians. The United States Olympic & Paralympic Committee receives no federal funding for Olympic athletes or programs.

Q:  Who pays for Team USA Athletes?

A: Team USA is proudly fan-funded! Our athletes are generously supported by sponsors and donors who help them make their dreams a reality.

这个网站专门管美国队的赞助： TEAMUSA。COM  可以免税 tax 

5赞助是01(c)3 tax-exempt organization and your donation is tax-deductible within the guidelines of U.S. law.

https://www.teamusa.com/