The ridiculous story we are bound to hear in the coming weeks and months heading into the midterm elections is how the Republican Party is the party of job growth, GDP growth and business investment. Now, I want to put my professor hat on and offer a bit of a history lesson to clear a few things up: the U.S. economy does better, by almost any metric, when a Democrat occupies the White House, and it’s been that way since FDR, if not earlier.