Associated Press: A scandal involving sex, drugs and — uh, offshore oil drilling. It’s a strange mix, and it couldn’t have come at a worse time for those in Congress pressing to expand oil and gas development off America’s beaches while trying to stave off an election-year rush by Democrats to impose new taxes and royalties on the oil industry. An Interior Department investigation describing a “culture of substance abuse and promiscuity” by workers at the agency that issues offshore drilling leases …