President Donald Trump signed an executive order Thursday pressuring states not to regulate artificial intelligence.

Trump and some Republicans argue that the limited regulations already enacted by states, and others that might follow, will dampen innovation and growth for the technology.

Critics from both political parties — as well as civil liberties and consumer rights groups — worry that banning state regulation would amount to a favor for big AI companies, who enjoy little to no oversight and that Trump's effort oversteps the limits of presidential power.

Here's what to know about states' AI regulations and what Trump signed.

What state-level regulations exist and why

Four states — Colorado, California, Utah and Texas — have passed laws that set some rules for AI across the priva

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