One surefire way to tell that Rick Perry’s entry into the presidential race is having a big impact is the sheer number of hit pieces that have been written against him in a 48-hour period. (See here, here, here, here…I could go on.)

I’m sure some of that is due to an oppo dump from other GOP candidates hoping to step on Perry’s momentum. However, there’s one theme from liberals that I suspect you’ll hear a lot of, a la the latest Krugman column, which is the furious accusation that Texas’ low taxes and business-friendly regulation haven’t really created a lot of jobs: