Amazon, Overstock Lose Challenge to N.Y. Web Sales Tax Inc., the world’s biggest online retailer, and discount Internet seller Inc. lost a challenge to New York’s Internet sales tax law as the state’s highest court rejected their arguments that it was unconstitutional.

Amazon, based in Seattle, and Overstock, based in Salt Lake City, sued the state’s Department of Taxation and Finance separately in 2008, seeking to overturn a law requiring retailers to pay taxes if they solicit business in New York through a link to a website.

The companies argued that the law violated the Commerce Clause

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