This bill does two main things: it creates a new national historical park in New York and designates a museum in Missouri as a national historic landmark.

The first part establishes the Fort Ontario Holocaust Refugee Shelter National Historical Park in New York. This park will preserve the history of 982 refugees from World War II who stayed at Fort Ontario between 1944 and 1946. The federal government will acquire land for the park and manage it like other national parks. Before the park officially opens, the government needs to buy enough land to make it a workable park unit. Once that happens, the park will offer educational programs and interpretive services to help visitors understand this important piece of American history.

The second part designates America's National Churchill Museum at Westminster College in Fulton, Missouri as a national historic landmark. This designation recognizes the museum's historical importance but doesn't restrict what the college can do with its own property. The federal government can help protect the museum and provide educational programs there, but the college continues to run it. The government also has to study whether the museum should become a full national park unit and report back to Congress within three years with recommendations and cost estimates.

Overall, this bill uses the national park system to preserve two historically significant locations—one related to World War II refugees and one celebrating Winston Churchill's legacy—while allowing local institutions to maintain control over their properties.