Better to be in US$ denominated investments than in £ sterling in the near to medium term

Everyone from Bill O'Reilly to Peter Schiff to Marc Faber have been prophets of doom for a long time on the US dollar frequently making dire pronouncements on the coming collapse of the dollar (as shown in this video featuring Bill O'Reilly). The simple truth is that it is best to be in US dollar denominated investments in the near to medium term as opposed to investments denominated in any other currency including pound sterling. Indeed at Capital Economics argues today the US is not broke and the dollar won't collapse.

One only has to observe the wobbly nature of all other currencies who are in a currency war against the dollar (and against each other) introducing inflationary pressures into their respective economies (except for the Euro which has different set of problems altogether. I recommend staying in US dollar denominated assets in the near to medium term as all other investments come with significant exchange risk.