WASHINGTON -- The Supreme Court agreed yesterday to review an Oklahoma sales tax levied on bus and other transportation tickets sold within the state for intra- and interstate trips.

The case, Oklahoma Tax Commission v. Jefferson Lines In., involves a January 1994 decision by the U.S. Court of Appeals for the Eight Circuit, which struck down the 1988 sales tax because it said it violates the Constitution's commerce clause. The clause prohibits states from erecting barriers to interstate commerce.

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