Guardian: The Obama administration has banned new oil drilling off the US coast as the first streaks of the huge and growing spill from a BP rig in the Gulf of Mexico lapped the Louisiana shore today. A decision taken last month to ease a moratorium on new offshore oil and gas drilling was being at least temporarily reversed while the cause of last week’s blowout on the Deepwater Horizon rig is investigated, according to White House adviser David Axelrod. Eleven workers are missing, presumed …