Politico: It's not often President Barack Obama gives a speech centered on agriculture, but the three years of scorching drought in California prompted him to fly there Friday to speak to weary farmers and ranchers and pledge millions of dollars worth of aid. "As anyone in this state could tell you, California is living through some of its driest years in a century,' Obama said after touring a farm and a water facility. Moments before Obama briefly painted a bleak picture of the state's condition by describing...