Richard Nixon actually said...
It is hereby determined that the jurisdiction of the Upper Mississippi River Basin Commission referred to in Section 1 of this order shall extend to those portions of the States of Illinois, Iowa, Minnesota, Missouri, Wisconsin, and North Dakota that are located within the Upper Mississippi, Souris, Red, or Rainy River drainage basins.
Context
Executive Order 11737—Enlargement of the Upper Mississippi River Basin Commission
09/06/1973