Due to the "shutdown" received hundreds of thousands of state workers, no pay for more - including the staff of the national parks. But the National Park Service issued a warning to visitors that staff will not be available to provide guidance or in case of emergency.
Campsites at Yosemite National Park, one of the most remarkable and popular in America, have been forced to close due to human effluence after the paralysis led to the closure of nearby public toilets.
Handwritten signs have also been posted asking visitors not to litter, as there are now no trash services.
In other parks, though, there doesn't seem to be such an organized group of helpers, and it sounds like visitors are treating national parks like their own personal Lord of the Flies-style anything-goes free-for-all.
National parks are seeing some of the worst of the effects as littering, trash overflow, un-maintained portable toilets, unlawful camping and off-roading is leaving locals concerned.
During the shutdown last January, a poacher killed a pregnant elk in Zion National Park and visitors were cited in Yellowstone for driving snowmobiles too close to Old Faithful.
Rattlesnake Canyon will close to reduce the number of potential search-and-rescue events for rangers already spread thin because of the shutdown, the park service said.
But some are seizing on the shortage of park staffers to off-road illegally and otherwise damage the park, as well as relieving themselves in the open, a park statement said.
Forget sunsets and mindblowing landscapes, the usual sights of the US's most iconic national parks have been overshadowed with reports of human poop and piles of trash as the federal government's shutdown rolls into the new year.
Yosemite isn't the only park experiencing the problems of waste and trash.
All other guests are being asked to enter the park via Highway 140 at El Portal Road.
In its final full day of the 115th Congress yesterday, the Senate failed to approve Trump's nomination of Grand Teton National Park Superintendent David Vela to fill the position. "It's a attractive time of year to visit the park now".
The National Archives is closed as a partial government shutdown stretches into its third week. "The local community has come together really well, even people visiting from out of town have made a decision to join after seeing our efforts on social media".
"I chose to clean up this one section, because that's what Americans will do", said Mr Snake, a 64-year-old member of the indigenous Ho-Chunk Nation in Wisconsin.