Please introduce the American social security number in detail.

Every American citizen is born with a social security number. This figure will be followed by individuals for a lifetime, and the tax paid by individuals for their lifetime work will be reflected in this figure. After reaching retirement age, the Social Security Bureau will give social security benefits according to individual tax returns until death.

There are three signs in American social security:

1, can work legally;

2. Be able to work under certain conditions;

3. can't work.

People with different visas can get one of these three social security numbers when they arrive in the United States. When an individual's identity changes, the type of social security number will also change, but the number remains the same.