Is there such thing as “class” in America? Not if you ask Rick Santorum. The once and possibly future GOP presidential candidate spoke to a Republican gathering in Lyon County, Iowa late last week and shared this piece of advice with his party: “Don’t use the term the other side uses.” That includes the “middle class.” Santorum proceeded to tear into President Obama for constantly invoking the term “middle class” in his speeches about the economy. “Since when in America do we have classes?” Santorum asked. “Since when in America are people stuck in areas or defined places called a...