McClatchy Newspapers: The Gulf oil spill not only has altered the landscape of the Gulf Coast , it also has completely changed the debate over national energy policy. "Drill, baby, drill," which drilling proponents chanted until a few weeks ago, has been replaced by "Spill, baby, spill," from opponents. Politicians from the West Coast to Florida propose banning new drilling on the outer continental shelf. Lawmakers from oil-producing states like Texas and Louisiana , however, warn that shutting off …