 Heath was a regular starter on the U.S. National Women's Team at the 2015 FIFA Women's World Cup in Canada, starting five of the U.S.'s seven games.In the World Cup Final, Heath scored in the 54th minute, on an assist from Morgan Brian.The U.S won the World Cup by defeating Japan 5–2

Heath scored two goals for the U.S during 2016 Olympic Qualifying, helping the U.S to qualify for the 2016 Summer Olympics.