Despite the restrictions , the United States has won all three world championships in which they have competed .
The United States has fielded a squad for the last three iterations , but with extremely restrictive criteria that make most American football players ineligible for the team .
Despite the restrictions , the United States   has won all three world championships in which American have competed .
The United States has fielded a squad for the last three iterations , but with extremely restrictive criteria that make most American football players ineligible for the team .