Discussions about the relative value of the dollar often assume that a “weak” dollar is bad, and the language used to describe relative currency values–“strong” and “weak”–reinforces that. But the relative value of a nation’s currency is an instrument of trade. China keeps the value of its currency very low, which means that Chinese manufactured goods are very cheap. One reason to manufacture in China is low wages, but a major reason for those low wages is the low value of the Renmin. A “weak” US dollar makes US export goods cheaper and therefore much more attractive to overseas buyers. If you’re Ford or GM, a weak dollar is not really a bad thing. It’s bad for Americans buying consumer goods made overseas, or traveling overseas. So a “weak” dollar raises the cost of model trains made in China. But it also encourages American manufacturing, which strengthens the economy overall. A “weak” dollar would encourage American companies to move production back to the US, for example. And a relatively “weak” dollar would encourage Toyota or Hyundi to build car plants in the US, for the same reason a weak Renmin encourages Accucraft to build in China.
This is not meant as an endorsement or a criticism of present policy or any particular administration, just pointing out that “weak” and “strong” can be slightly misleading terms.