Suppose the value of the dollar plummeted, and the resulting increase in the cost of imports resulted in mass shortages of certain goods.  Is it current US policy, or should it be current US policy to prevent an agricultural trade deficit in order to protect the nation's food supply?  In other words, shouldn't we mandate a positive trade balance on food commodities so we can always feed our own citizens - no matter what?  Trade deficits don't normally concern Americans, but perhaps with the dollar's precarious future they should.