Us States are not equal to European countries in any of the ways that matter here: they can’t have their own central banks or issue their own currencies, can’t

Us States are not equal to European countries in any of the ways that matter here: they can’t have their own central banks or issue their own currencies, can’t decide general banking policies, can’t control trade in any meaningful way. A better analogy of US states to Europe is provinces of a country - their economic powers are extremely limited, and on the scale of macroeconomics, nearly meaningless.