And as the U.S. faces Germany with a berth in the World Cup knockout round at stake, the team is getting lots of love on social media, driven by the hashtag #LetsDoThis.
Below are a few videos, photos and messages from the team and its fans:
The team arrives:
The president lends his support:
Team USA's coach, Jurgen Klinsmann, implores bosses to let their employees take an extra-long lunch:
Giants ace Tim Lincecum (fresh off a no-hitter) gets in on the act:
The Windy City lights up for Team USA:
The San Francisco 49ers were among several football teams to show their support for the other "football."
Even Hulk Hogan got in on the act: