WASHINGTON, DC - OCTOBER 01: U.S. President Barack Obama walks back to the Oval Office after delivering remarks about the launch of the Affordable Care Act's health insurance marketplaces and the first federal government shutdown in 17 years in the Rose Garden of the White House October 1, 2013 in Washington, DC. House Republicans and Senate Democrats continue to volley legislation back and forth as they battle over a budget to keep the government running and delaying or defunding 'Obamacare.'