President Trump struck an unusual deal with Nvidia and Advanced Micro Devices that allows the companies to sell certain chips to China in exchange for giving the U.S. government a 15% cut of those sales.

But the unprecedented agreement also has raised concerns from politicians and legal experts over whether the deal is legal and would pose a national security threat.

Questions also linger about exactly how the deal, which was announced Monday, would work because the U.S. Constitution bars taxes on exports, although some experts said Trump could find a workaround.

The U.S. government might receive $3 billion from the revenue split if China's demand for Nvidia's H20 chip - which is less powerful than the company's highest-end artificial intelligence chip - reaches $20 billion, according

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