The State of the Union (SOTU) annual address is tonight, and President Barack Obama will be presenting his third SOTU to members of Congress. In anticipation of this event, we thought we'd offer some SOTU history, courtesy of former speechwriter for Vice President Al Gore, Robert Lehrman via Politico: Former President Richard Nixon in 1970 reportedly once said, "Agriculture in a State of the Union isn't worth a damn."Others disagree. Commodity and producer groups hope the president will talk about the farm bill. The Renewable Fuels Association (RFA), in fact, sent President Obama a letter reminding him that his upcoming SOTU is a "unique opportunity" to comment upon the "value of a strong domestic renewable fuel industry." The RFA added t...