At a 2005 workshop, a senior official in the U.S. government's Minerals Management Service raised concerns about ultra-deepwater drilling and included the bullet point, "Few or no regulations or standards." Within two years, Jim Grant left his post as chief of staff of the government's Gulf of Mexico region to take a job with BP PLC — one of the companies his former agency regulated in its oversight of offshore drilling.

Grant's change is one example of the revolving door between the Interior Department's MMS and the oil industry, which increasingly has the attention of Congress, the Obama administration and watchdog groups after the disastrous BP oil spill at an ultra-deepwater rig in the Gulf of Mexico.

Just this week, a government report said drilling regulators have been so close to the industry they've been accepting gifts from oil and gas companies and even negotiating to go work for them.

As BP's regulatory compliance and environmental manager for the Gulf of Mexico strategic performance unit, Grant has weighed in on several offshore drilling proposals by his former federal employer and other government agencies.

Last fall, speaking at a U.S. ocean policy task force, Grant cautioned the group to "carefully weigh policies that may establish exclusionary zones, disrupt the MMS leasing program or affect opportunities for economic growth," according to a statement posted at WhiteHouse.gov. He said BP supports access to areas previously off-limits to leasing, such as the eastern Gulf of Mexico.