It’s important to remember that any person is possibly a worker, but certainly a consumer. In fact, those two aspects average out to perfect balance, by definit

It’s important to remember that any person is possibly a worker, but certainly a consumer. In fact, those two aspects average out to perfect balance, by definition. So even in a worst case scenario, where all immigrants happen to have one skill only, and overwhelm the market for, say, phone booth cleaning, they are also a market for any other profession of at least equal size. In practice, the numbers of immigrants should be easily absorbed by the vastly larger population of the US, although it may be beneficial to, for example, spread out the impact among the states and invest in vocational training.