The Supreme Court appeared divided and searching for consensus Monday in a major case involving climate change that could determine whether local governments can sue producers of fossil fuels for potentially billions of dollars in damages over alleged marketing deception and the impacts of global warming. Boulder, Colorado brought the case against Exxon Mobil and Suncor Energy. …A victory for the city would clear the way for its claims — and dozens of similar cases elsewhere — to move forward in state courts but would likely not be the final word in the dispute. “This case involves an unprecedented effort to use state law to regulate global conduct,” argued Kannon Shanmugam, an attorney for the energy companies. “If Boulder’s claims are allowed to go forward, some 90,000 municipalities across the country will have the ability to make national and international energy policy by asking juries to impose catastrophic damages on selected fossil-fuel producers.”