There are three types of economy: White, black and grey. The last one is much more potent than the other two. The grey economy can facilitate a country to use it as second line of defence in case that country faces business warfare or geoeconomics pressure.. Grey economy, second line of defence

The United States fails to make grey economies - parallel economies - in it's many states to ward off socialism forced by the progressives in the party of Biden. Trump has four years to reverse their gains.