Washington, DC -- UK's Lord Christopher Monckton, a former science advisor to Prime Minister Margaret Thatcher, claimed House Democrats have refused to allow him to appear alongside former Vice President Al Gore at a high profile global warming hearing on Friday April 24, 2009 at 10am in Washington. Monckton told Climate Depot that the Democrats rescinded his scheduled joint appearance at the House Energy and Commerce hearing on Friday. Monckton said he was informed that he would not be allowed to testify alongside Gore when his plane landed from England Thursday afternoon.