What is the identity of the American office?

1/ marry an American citizen and apply for marriage immigration.

2/ If you have immediate family members in the United States, I will apply for relative immigration for you.

3/ You have skills that Americans don't have. There happens to be an American company willing to hire you and offer you H- 1.

A few years later, the company didn't fire you, and the boss was willing to do immigration for you.

4/ You have strong economic strength, and you invest 500,000 or1000,000 dollars in immigration.

The rest is smuggling and the like, and there is still a difficult way to go before "running identity"!