David Frum @davidfrum
Joint US-E.U. -Japan border carbon tariff on any country that does not adopt a carbon tax of its own https://t.co/z3qn0fEo0Z — PolitiTweet.org
Henry Olsen @henryolsenEPPC
China emits more CO2 each year than the US and E.U. combined. What level of carbon tax would cut enough emissions t… https://t.co/ACCO4XBR8D