FOR USE AS DESIRED, YEAR END PHOTOS - FILE - A US Park Police officer watches at left as a National Park Service employee posts a sign on a barricade closing access to the Lincoln Memorial in Washington, Tuesday, Oct. 1, 2013. Congress plunged the nation into a partial government shutdown as a long-running dispute over President Barack Obama's health care law stalled a temporary funding bill, forcing about 800, 000 federal workers off the job and suspending most non-essential federal programs and services. (AP Photo/Carolyn Kaster, File)