Sydney Morning Herald: BARACK OBAMA went into the White House determined to lead the world on climate change, but he is facing a very rough passage. His administration is trying to navigate a flimsy vessel through an impossibly narrow channel between two rocky shoals. The President’s rickety boat? A preliminary piece of legislation. The US House of Representatives narrowly passed a bill that proposes to cut American carbon output by 15 per cent by 2020 and by 80 per cent by 2050. Obama has …