The nation's economy expanded at an annual rate of 2 percent last quarter, according to this morning's GDP report. That's faster than last quarter's 1.3 percent and a bit above what most analysts were expecting, so that's good. But it's also just trend growth -- 2 percent is about what it takes to keep the job market pretty much where it is. I could easily write the campaign press releases: Romney/Ryan: growth too slow! Obama/Biden: 13th quarter of expansion, growth picked up from last quarter, no time to change horses (I'd add: especially when the other horse wants to run hard in the wrong direction).