From Yahoo! News:
The Obama administration, under heavy pressure from the oil industry and Gulf states and with elections nearing, on Tuesday lifted the moratorium that it imposed in April. The ban had been scheduled to expire Nov. 30, but Interior Secretary Ken Salazar moved up the deadline, saying new rules have strengthened safety and reduced the risk of another catastrophic blowout that caused more than 200 million gallons of crude to spew from BP's well a mile beneath the Gulf.
Of course, the full details are still largely not fully known regarding what went wrong with the Deepwater Horizon, and much of what we do know about it indicates that people weren't following the guidelines already in place. So to suggest that things are safer now than before is assuming that individuals in the oil industry are less greedier now than before - and if you believe that, I have some swampland on the planet Pulcova to sell you.