In an opinion piece, Robert Sedler, constitutional law professor at Wayne State University, said that a proposed Michigan-Canadian bridge across the Detroit River between Detroit and Windsor would be unconstitutional as pre-empted by federal law. "If the State of Michigan were to attempt to construct and operate another bridge over the Detroit River between Detroit and Windsor to compete with the Ambassador Bridge, either on its own or pursuant to an arrangement with Canada, there would be a direct conflict between the action of the State of Michigan and the 1921 Special Act of Congress," he said.

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