Canadian Press: Canada could be barred from international carbon trading if a United Nations probe finds it broke Kyoto Protocol rules for greenhouse-gas reporting. A statement posted on the UN Climate Change Secretariat’s website says Canada was officially told May 5 it would be investigated for allegedly breaching a Kyoto greenhouse-gas reporting requirement. The enforcement branch had already warned Canada last month it risked scrutiny for missing a Jan. 1, 2007, reporting deadline by more …