My  2 cents would be the  same  whether you  were going to  St  John  USVI or  MDI/Acadia NP  Maine.  Don't let the   government   shut  down decide for you.  Go, be  an adventurer,  a traveler,  focus on locals to help you and guide you. I think as this  goes on without  resolution,  people  are going to become  more adept at creating new  opportunities within their impacted  communities, and  helping  each other get through this  cluster-F/.  You could be scared  away, which only adds insult  to injury and puts  more  people out of work, or you  could go  knowing that your presence there  actually  is needed.   Its  all in  the attitude of the traveler. 
Honestly,  is this  Government shutdown  THAT much different than being there  and having  a  Tropical Wave/ Storm/Hurricane  pay a visit ?
Breeze