Xinhua: Former U.S. Vice President Al Gore here on Thursday urged the Bush Administration to act with sense of urgency on climate change, which he described as a “moral” issue. “My own country, the United States of America, is principally responsible for obstructing progress here in Bali,” said Gore in an emotional speech delivered on the sidelines of the ongoing United Nations Climate Change Conference. Gore, who won this year’s Nobel Peace Prize for campaigning …