Need to, won’t do, can’t do.
What we currently think of a government - an enormous, bloated, overbearing leviathan - will cease to exist but there are sufficient excise taxes and tariffs to run a properly-sized government.
We will, however, need to do something with the inner-city refugees that will come pouring of their homes when their EBT cards no longer work.
Fortunately, they failed to disarm ordinary Americans so we should be able to defend ourselves.