Answer:
The number of elderly Americans is growing quickly, so more money is going out than coming in.
Step-by-step explanation:
The Social Security Administration is currently facing a problem that is common in developed countries. As the population ages, there is a large number of elderly people and a smaller number of young workers. This means that more money is being used for pensions than the money that is coming in. This affects the elderly people, but it can also have an impact on the young workers, as it makes it more likely that their pensions might be affected in future decades.