Richard Nixon actually said...
It is hereby determined that the jurisdiction of the Missouri River Basin Commission referred to in Section 1 of this order shall extend to the State of Nebraska and those portions of the States of Colorado, Iowa, Kansas, Minnesota, Missouri, Montana, North Dakota, South Dakota, and Wyoming that are located within the Missouri River drainage basin, defined as the drainage basin of the Missouri River above a point immediately below the mouth of the Gasconade River.
Context
Executive Order 11658—Establishment of the Missouri River Basin Commission
03/21/1972