Why is there no serious population aging in the United States?

The United States is the hardest hit by the aging population, not serious, but very serious. . . People who step on me basically don't understand the global aging problem, which is one of the reasons why there are many rumors on the Internet and many people believe them. If you don't understand, you like to pretend to understand and then express your opinion. This is also one of the rumors. Almost as sweet as the air in the United States, it is the favorite of sheepdogs. ) Comparing the data, the aging of American emperors is much more serious than that of China. The American emperor entered the aging society on 1965, and China entered the aging society only in recent ten years. The biggest reason why American imperialism is aging is that immigrants meet the domestic labor demand, and the problems created by immigrants are much more serious than the problem of population aging. The problem of aging is covered up and can't attract people's attention.