The resilience of the U.S. economy has been a surprise to Wall Street, and the Federal Reserve, for well over a year now, and the latest GDPNow estimate from the Atlanta Fed suggests the first quarter could once again handily beat Wall Street’s estimates. The leading theory on why the economy has been so strong, even amid a surge in inflation and then a steep rise in interest rates, is the power of fiscal spending. One paper last year suggested that unless the government pays down the debt — no risk of that ...