 The boundary commission surveyed and marked the border, and the Supreme Court issued orders and decrees in "State of Missouri v. State of Iowa", 51 U.S. 1 (1850), acknowledging their work and establishing the boundary thereby.However, by 1895, a portion of the boundary had been disturbed (by natural or man-made causes was unclear), and the boundary markers removed.To resolve the new dispute, Iowa and Missouri jointly filed suit and asked the Supreme Court to once more intervene.