U.S. first lady Michelle Obama has a message for other countries seeking to host the 2016 Summer Olympic Games: in the fight the "gloves are off." The Chicago native heads to Copenhagen this week to promote her hometown in its bid to stage the Summer Olympics, paving the way for her husband, President Barack Obama, who will make a quick trip to Denmark on Friday to try to seal the deal. "This is very cool for me," the first lady told reporters in a rare briefing in the White House's state dining room on Monday. "I could've never imagined that...