Montgomery v. Portland

Background

A dispute arose when private persons sought to build structures like piers or docks in a navigable waterway that lay entirely inside a State. The State and its local authorities had laws and an ordinance requiring permits before any such waterfront work could begin. At the same time, federal legislation and the Secretary of War’s approvals were involved: Congress had passed acts (including an 1890 act and the River and Harbor Act of 1899 referenced in the opinion) and the Secretary had given assent in similar situations. The case reached the Supreme Court after the Supreme Court of Oregon had ruled against the private builders; the high court’s opinion affirms that Oregon judgment.

Reasoning

The central question was whether federal legislation or the Secretary of War’s approval alone lets private parties override a State’s rules about building in navigable waters entirely within that State. The Court said the statutes, when reasonably read, do not show that Congress meant to take total control and displace state authority. The opinion recognizes that Congress has broad power over interstate and foreign commerce but explains that Congress did not clearly intend to allow private structures without the State’s concurrence. Therefore private rights to erect such works are not complete and absolute without both national and state assent. The Court also noted that the Government’s own right to build public works rests on different grounds and did not need full resolution here.

Real world impact

The ruling means private builders must obtain both federal approval and state permission before constructing docks or similar works in waters wholly inside a State. Federal assent alone will not override state laws, and state permitting regimes remain effective. The Supreme Court affirmed the Oregon decision, leaving the balance of federal and state control in place under the existing statutes.