Top Senate Democrats wrote an open letter asking President Donald Trump to rethink his decision to allow artificial intelligence chip sales to China. The deal allows chip giants Nvidia and AMD to sell advanced AI chips to China in exchange for a 15% cut of revenue from the sales.

Nvidia struck a surprising deal after convincing the president that H20 chips aren’t a national security risk. But whether the reversal is good or bad depends on who you ask.

Trump said Monday that he has cut a deal with chipmaker Nvidia, allowing it to sell certain artificial intelligence chips to China in exchange for a cut of the revenue, which would go to the U.S. government. Trump said he also negotiated a similar deal with chipmaker Advanced Micro Devices (AMD).