Hmm, so all government spending funded by tariffs?
Countries will eventually find other trading partners unencumbered by tariffs, so the money will dry up.
I'm not sure whether the USA can actually supply anything that is absolutely not available elsewhere in the world, so your exports would be more vulnerable to retaliatory tariffs. Oh dear, more sources of money will dry up.
The US dollar is the world's majority currency, because much trade involves the US, and is conducted in dollars. If that trade diminishes (as it will with tariffs) then the relevance of the dollar as a global currency will reduce.
Now you may claim that you can fund all your needs education, healthcare, retirement provision, housing etcetera from your own income. But if trade dries up and jobs disappear, and incomes go, what then?
North Korea imports little and exports even less. Poor people starve. What a powerhouse that is. I'm not suggesting that the USA will immediately turn into North Korea, but...