Associated Press: Canada was accused of undermining negotiations at the Bali climate change conference by insisting on targets for poor nations yesterday while developing countries led by China again squabbled with the West over mandatory emission cuts. The U.S. negotiator to the conference said bluntly that the U.S. will come up with its own plan to cut global-warming gases by mid-2008, and won’t commit to mandatory caps at this UN conference. “We’re not ready to do that here,” said …