How can children accompany their parents when they immigrate to the United States?

You should go to immigration for details. You can call 1 14 to find the number, and then ask that bureau to evaluate your personal data. You can only apply for a certificate if you pass the exam, as if you have a guarantor or something, but as soon as possible, it will take at least two months to get a visa (unless it is relevant). Being a cashier abroad may not be your only way out (personal opinion)