 There isnt a clear catalyst for the improved sentiment in markets and fall in the US dollar but theyve come at the same time. SP 500 futures are now up 20 point and commodity currencies are leading the charge against the dollar.The loonie is particularly strong today after a jump in oil prices in Texas on the shutdown of the Keystone pipeline due to a leak. I think thats the wrong takeaway because the pipeline transports oil from north to south and is likely to further exacerbate t... 