Fly to Los Angeles airport, stop at Los Angeles airport for five hours, and then transfer to Boston. Where do I enter the customs? Do I have to check my baggage twice?

1: Foreigners who arrive in the United States by plane must go through the entry formalities at the airport where they land first;

2. Baggage should be collected before international transfer to China;

Take it easy!

Relax and watch the process carefully: fill in the I-94 form and customs report on the plane before entering the United States. After arriving at the American airport, follow the crowd into the arrival hall. No matter whether you have reached your final destination or have to transfer in other cities in the United States, you must go through the entry inspection formalities at the first American port of entry. There are two different queues: one is American citizens and green card holders, the other is non-immigrant visitors. When it's your turn, hand in the I-94 form, show your passport and customs declaration form, and other materials (I-20 and other materials if you are studying abroad), fingerprint and take photos. After the approval of the customs officer, put the semi-copy of I-94 on your passport. After entering the country, go to the baggage claim area; ; The baggage claim area looks at the flight information you just took and waits for your baggage. Then go to the domestic terminal for security check and hand it over to the bellman for connecting flight.

5. Take a deep breath and relax again. Good luck!