Federal Register/ Vol.51 No. 43 / Wednesday, March 5, 1986 / Rules and Regulations
[Re:Vigils]

......The National Park Service did consider closing the park to demonstrators at night. However, this limitation, as any limitation on duration of demonstrations, would preclude continuous vigils in Lafayette Park. Although the Park Service does not believe that it has a constitutional obligation to allow continuous vigils, it does not  wish to preclude them unless other measures are insufficient to meet aesthetic, public safety and resource concerns......