Striker Eddie Johnson, whose goals helped the United States to qualify for the upcoming football World Cup, has surprisingly been left out of coach Juergen Klinsmann's 30-man provisional squad.
Johnson scored against Panama and Mexico in the final round of CONCACAF qualifying and played a major role in the earlier rounds.
But the 30-year-old missed out on a place as Rapid Vienna striker Terrence Boyd earned a surprise inclusion - even though he is yet to score for the national team.
Teenage midfielder Julian Green, who is on Bayern Munich's books but mostly plays for their lower league second team, was named along with several other dual-nationals, including AZ Alkmaar forward Aron Johannsson, who represented Iceland at youth level.
The United States, who finished top of qualifying in CONCACAF, will face Ghana, Portugal and Germany in Group G at the tournament in Brazil.