People attend a rally to celebrate the start of the Affordable Care Act (commonly known as Obamacare) at the U.S. Capitol in Washington, October 1, 2013. The U.S. government began a partial shutdown for the first time in 17 years, potentially putting up to 1 million workers on unpaid leave, closing national parks and stalling medical research projects. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS BUSINESS HEALTH)