In a world with no friction, one would want tariffs to apply to all goods. The de minimis exemption dealt with the fact that it was a PITA to do all the paperwo

In a world with no friction, one would want tariffs to apply to all goods. The de minimis exemption dealt with the fact that it was a PITA to do all the paperwork etc. that accompanies a tariff. Obviously the main problem is that tariffs do not lead to positive future outcomes for the country levying them.