Mayer Brown6DLA Piper4Cleary Gottlieb Steen & Hamilton3Gibbons3Simpson Thacher & Bartlett3Skadden, Arps, Slate, Meagher & Flom3Cooley2Davis Polk & Wardwell2Debevoise & Plimpton2White & Case2Andrews Kurth1Arnold & Porter1Dorsey & Whitney1Duane Morris1Fulbright & Jaworski1Hogan Lovells1Shearman & Sterling1