In a 2011 paper on Nixon and the environment, historian Paul Charles Milazzo points to Nixon's creation of the United States Environmental Protection Agency (EPA), and to his enforcement of legislation such as the 1973 Endangered Species Act, stating that "though unsought and unacknowledged, Richard Nixon's environmental legacy is secure".
历史学家保罗·查尔斯·米拉佐（Paul Charles Milazzo）在2011年的一篇有关尼克松和环境的论文中指出，尼克松建立环境保护局，还执行诸如1973年《濒危物种法》等法律，“虽然没有得到追捧和承认，但理查德·尼克松的环境遗产是稳固的。