You are right, but I was discussing in reference to a U.S. based emissions "tax". Maybe I misunderstood and they were suggesting a worldwide tax? Not sure how

You are right, but I was discussing in reference to a U.S. based emissions "tax". Maybe I misunderstood and they were suggesting a worldwide tax? Not sure how that would work. If the U.S. were to tax agriculture production of beef, I'm assuming that would be for U.S. farmers so the relevant statistic is emissions in the U.S.