Lao Liang: Let me show you how troublesome it is to apply for a visa in the United States.

Fill in the form and make an appointment. I'll apply in person. Most importantly, your application depends on the person and the attitude of the visa officer. If you pass, your fingerprint.

America is a country of immigrants. If you are an immigrant, do not apply for a non-immigrant visa. At least, the refusal rate of immigrant visas is low. In this case, an American visa does not necessarily guarantee that you can enter the United States. You need all kinds of inspections and inquiries.