The problem isn't the currency, it's the "leadership":

Boom years: keep debt at a constant percentage of GDP - i.e. it can creep up
Bust years: spend to stimulate economy - i.e. it can surge up

When are the years we try to run as a surplus?

Any currency with this outlook is in trouble - any country with this outlook is in trouble. The budget needs to be drastically altered. my preferences would be the two wars we are currently in - unless other countries want to pay us to fight, slim down the Civil service and cut social support in many areas.

The currency looses value helps to increase imports and make the country - temporarily - more attractive to investors and for exports. Sure, imports are more expensive - but we need to reduce these in any case as we as a country have lived beyond our means for years.