US and Mexico and the fight over dual nationals

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Across
  1. 2. Match between rival teams
  2. 7. Family culture or background
  3. 8. Invitation to join a national team
  4. 10. When a player changes nations
Down
  1. 1. Move from one club to another
  2. 3. Soccer and Steel
  3. 4. When a player commits to a nation
  4. 5. The organization of soccer around the world
  5. 6. Before MLS
  6. 9. Almost played in 4 WC's