Guardian: Senators are set to take a last run at producing a climate and energy law tomorrow, betting on the spectre of environmental disaster raised by the BP oil spill to build support for a comprehensive overhaul of America’s energy strategy. But despite a strong push from the Obama administration, there are concerns the debate about the energy future could be lost in the wrangling about offshore oil drilling permits. The official roll-out by Senators John Kerry and Joe Lieberman caps …