Keynesian Economics - the theory that the United States can borrow it's way out of debt.

In Keynes's theory, there are some micro-level actions of individuals and firms that can lead to aggregate macroeconomic outcomes in which the economy operates below its potential output and growth. Some classical economists had believed in Say's Law, that supply creates its own demand, so that a "general glut" would therefore be impossible. Keynes contended that aggregate demand for goods might be insufficient during economic downturns, leading to unnecessarily high unemployment and losses of potential output. Keynes argued that government policies could be used to increase aggregate demand, thus increasing economic activity and reducing unemployment and deflation.