Is it illegal? Traveling to the United States, working 1 year, with work card, social security number and no green card, what is the situation?

According to what you said, this identity is very unreliable, and nine times out of ten it is "made". Part-time job is ok. There are many illegal workers in China, new york. However, there is no other way to get a tourist's work permit except to find a bad lawyer to cheat. It is possible to get a social security number, but it is unlikely to happen in a concentrated Chinese residential area. The immigration staff in those places are better than immigration lawyers, so it is difficult to exploit loopholes!

There is no temporary social security number, only the A number (registration number starting with A) issued by the Immigration Bureau is used for inquiry, and there is no welfare or legal residence right. Once the social security number is issued, it is the holder's lifelong certificate number until the holder dies.