https://arstechnica.com/tech-policy/2018/06/first-state-net-neutrality-law-took-effect-today-countering-fcc-repeal/

The State of Washington today became the first US state to impose a net neutrality law that replaces the nationwide regulations repealed by the Federal Communications Commission.

Washington's legislature and governor approved the new law three months ago and arranged for it to take effect as soon as the FCC finalized its repeal. The FCC repeal was finalized today, so Washington's state law has gone into effect.