Associated Press: The nation’s top drilling regulator is refusing to pin down a date for a possible early end to the deep-water petroleum drilling ban in the Gulf of Mexico. Michael Bromwich is head of the Bureau of Ocean Energy Management, Regulation and Enforcement. He would not commit Wednesday to a deadline for a decision. He had said Tuesday that the Obama administration was considering tossing out the six-month ban. He now says it is “very unlikely” a decision will come before a …