USD may actually not be the worst of a bad lot, but whatever it is, I think it is on a long, slow race to the bottom with its global competitors. Unc has long since lost the big picture support zone at around 80 and has spent the last few years vacillating above and below it. This, likely in preparation for a confirmed move higher or... the opposite.
In a nod to Prechter, one wonders about the similarities between the blue highlighted boxes. Unlike in the late 80's/early 90's, a deflationary backdrop could only be destructive now after Mr. Greenspan oversaw the piggish devouring of all of the US' seed corn. There are precious few real and obligation-free resources to fall back upon other than continued inflationary credit creation.
Dialing in the technicals, MACD is confirmed in big picture bear territory by the TRIX and neither of the USD bulls can point to anything going on in the AROON trend as positive. Still, one does note that MACD and TRIX went bear in the mid-90's before a massive upturn that drew capital into the United States like a magnet to help capitalize the final secular stock bull market blow off.
But times are very different now, so I personally would not be thinking that history must repeat.
Just reflect and realize how interesting the current enviro is.