I don't think NFTs as a whole are breaking any FTC related laws. However, the way that they are marketed or sold could break some laws if the communications are deceptive. For example, a rug pull might be considered illegal under US Law Title 16, Chapter 1, Subchapter B, Part 238.4 "Switch after Sale":

https://www.ecfr.gov/current/title-16/chapter-I/subchapter-B...