This comment looks at the 1977 Pipeline Treaty, binding on the United States, designed especially to guaranty unimpeded pipeline transit. It was approved by the U.S. Senate (including by then Senator Biden) specifically to prevent any state or province from interfering with hydrocarbon shipments. This means the U.S. president has to take steps to ensure his country’s legal obligations are complied with, not breached by the unilateral actions of Michigan.
