JDrich
Answered

According to the 1907 Gentlemen’s Agreement between the United States and Japan,

Athe Japanese government would stop issuing passports to citizens intending to immigrate to the United States.
Bthe Japanese government would issue only 5,000 passports per year to citizens intending to immigrate to the United States.
Cthe US government could revoke the citizenship of Japanese immigrants already settled in the United States.
Dthe US government could refuse to grant passports to American citizens intending to immigrate to Japan.