sentences:  In 2017, a representative of the National Trust reported that despite the mansion's status as a National Historic Landmark "there’s no oversight or review to stop an external agency to propose changes to the building..." The Trust's concern is that significantly changing the mansion, or, worse, demolishing it, would be a slight to Walker's life achievements.In May 2017, Westchester County certified an easement under the auspices of the National Trust, a significant step in the house becoming a museum.The Doleys are exploring ways to continue to live in the house if and when it achieves that status.