True, they are not called refund checks; they are called economic stimulus checks. Can't be refunds as even many people who pay nothing in are receiving monies.

The government can print more money; it hasn't had money in circulation that the federal reserve has guaranteed nor backed since 1999, and it was 1971 when Pres Nixon (and Congress followed suit) that the dollar was no longer based upon a gold standard.

The USA has huge loans from China.

Wealth never disappears, it only changes hands.