Is deepfake illegal? Depends on the deepfake, the state, and whether anyone said yes. Anyone selling a one-line answer is selling something else.
The clear part first. Nonconsensual intimate imagery. Most states that bothered with deepfake law started here, and the trend runs one direction. If the person in the fake didn't consent and it's sexual, assume you're standing in dangerous territory in most of the country. I wouldn't test the edges of that assumption for any reason.
Then the fog. Political deepfakes are regulated in some states and untouched in others, and the rules usually aim at election-period deception, not parody. Impersonation for fraud is illegal everywhere, deepfake or not, because fraud was already fraud before anyone generated anything. Deepfake consent law around commercial likeness adds another layer. Using someone's face to sell something without permission was actionable before AI showed up, and it still is.
Honestly, the patchwork is the whole story. There is no American deepfake law. There are dozens of state laws, a federal layer, and 40+ countries doing their own thing, each with its own definitions and penalties. Confusing, yes. Navigable, also yes, if you look up your actual jurisdiction instead of doom-scrolling hot takes. A deepfake law compliance checker tool helps here, because AI content law compliance is mostly the unglamorous habit of checking before you ship.
DeepfakeLaw exists for that lookup: 91 laws, requirements, penalties, effective dates. The practical takeaway for creators: the question isn't whether your synthetic media is technically impressive. It's whether you have consent and whether your state cares. Get those two answers and you're most of the way home.
And if you'd rather have someone translate all of that for your product, I do plain-language compliance audits at deepfakelaw.fyi.