A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "California State Motor Vehicle and Engine Pollution Control Standards; Advanced Clean Cars II; Waiver of Preemption; Notice of Decision".

Senate Joint Resolution 45 seeks to block an Environmental Protection Agency (EPA) rule that would have allowed California to enforce its Advanced Clean Cars II vehicle emission standards. The resolution uses the congressional disapproval process under federal law to declare the EPA rule invalid, preventing California from implementing its stricter pollution controls for cars and trucks. If passed, this resolution would stop the rule from taking effect, meaning California could not override federal vehicle emission standards with its own requirements. The bill directly affects California's ability to set state-level environmental regulations for motor vehicles and the EPA's regulatory authority.