There’s plenty of stories about the safety problems that BP experienced but it’s a tough obstacle to overcome when you have members of Congress apologizing for any criticism. Overcoming the power and influence of Big Oil won’t be easy.

A former official with BP’s drilling operations in the Gulf of Mexico resigned just months before last year’s oil spill because of disagreements with the oil giant over its commitment to safety, according to a class-action federal lawsuit related to the spill.

Documents filed Monday night in Houston claim Kevin Lacy, BP’s former senior vice president for drilling operations for the Gulf of Mexico, reached a mutual agreement with the company to resign in December 2009 because he believed the company was not adequately committed to improving safety protocols in offshore drilling operations to the level of its industry peers. The Deepwater Horizon rig explosion occurred on April 20, 2010, killing 11 workers and causing the worst oil spill in U.S. history.