The Associated Press requested further details in emails and a telephone call to officials with the National Park Service and Department of Interior on Tuesday and Wednesday. The park service oversees large national parks such as Yellowstone and Grand Canyon, national battlefields, national monuments such as the Statue of Liberty and historic sites including Independence National Historical Park, home of the Liberty Bell. Many national parks stayed open during a five-week shutdown in Trump’s first term. The contingency plan allows parks to enter into agreements with states, tribes or local governments willing to make donations to keep national park sites open. States where national parks draw major tourism lobbied to keep them open during past shutdowns, and Utah agreed to donate $1.7 million in 2013 to keep its national parks open.