Ashland Oil, Inc., et al. v. Governor of Maryland et al.

Opinion summary

Etalia.ai summary of the majority opinion

The case involved a challenge by Ashland Oil, Inc. and other oil companies against the state of Maryland regarding its regulatory measures on petroleum allocation during an energy crisis. The Supreme Court examined whether Maryland's statute, which required oil producers to allocate a certain percentage of their products to in-state distributors before selling out-of-state, violated the Commerce Clause of the U.S. Constitution. The Court held that while states have some authority over local commerce under police powers, they cannot enact regulations that discriminate against or unduly burden interstate commerce without violating federal law. Ultimately, it was determined that Maryland’s statute imposed significant restrictions on interstate trade by favoring in-state businesses at the expense of out-of-state interests and thus was unconstitutional.