WASHINGTON - First Lady Michelle Obama raised money Monday for 2014 Senate Democratic candidates, including Mary Landrieu of Louisiana. In a speech, she warned Republican control of the Senate would derail her husband's agenda. **SNIP** "So make no mistake about it, the midterm elections matter," Mrs. Obama said. "They matter. And if you want to bring some change to Congress, then we can't just sit around feeling angry or helpless or hopeless. Because there's something that we and all of you can do right now, today, to make a huge difference and it's simple: You can write a big old...