https://thinkprogress.org/bps-defense-attorney-tapped-for-trump-s-environmental-team-31152a559c72
"After BP’s massive 2010 Deepwater Horizon rig blowout and subsequent oil spill, Clark successfully defended the company against “a multibillion-dollar appeal brought by 11 Louisiana parishes,” his law firm says. Clark was also lead counsel on BP’s appeal of the historic damages awarded in the Deepwater Horizon case, which was prosecuted by the same division of the Justice Department that Clark will run, if confirmed."