https://www.techdirt.com/articles/20190105/14532841340/federal-court-says-oregons-unconstitutional-licensing-law-cant-keep-local-engineer-calling-himself-engineer.shtml

Oregon resident Matt Jarlstrom didn't agree with the state's traffic safety assessment, spurred on by his wife receiving a ticket from a red light camera. Using his background in engineering and his real-world experience with automatic cameras, he did some math and tried to present it to government officials. The government didn't respond well. It fined Jarlstrom $500 for practicing engineering without a license. In the state of Oregon, certification is needed to call yourself an engineer, even if you're not actually performing any engineering work. At least, that's the way the state read the law when it chose to punish Jarlstrom for questioning its timing of yellow lights.

Naturally, this stupid decision resulted in a lawsuit. Pointing out the unconstitutionality of using a licensing law to suppress protected speech, Jarlstrom sued the state in April 2017. A couple of months later, the state licensing board graciously agreed to temporarily stop violating Jarlstrom's First Amendment rights.