This coming week we shall likely see Congress pass an extension of the “temporary” payroll tax cut, first enacted as a stimulus to the economy in January of 2011. As I write, the extension is just for two months. We’ll leave aside the politics and look at the economic implications of the extension, and then go on to examine the deficit in the US. That will give rise to some thoughts about Europe and what would have to happen for a country to leave the euro. We’ll finally close with some thoughts and graphs about the more controversial part of the tax cut extension, the Keystone XL Pipeline. Just how radical is it to build such a pipeline in the US? And what are the implications for the deficit? I think looking at a few maps might surprise some readers. It should all make for a rather controversial letter, but then controversy is my middle name.