There's a quiet turf war being waged between Californian law firms and Washington, D.C., natives. On one side of the battle lines, traditional tech law firms from the Golden State are positioning themselves as regs experts in the nation's capital. On the other, Washington law firms—with long histories of regulatory prowess—are proving themselves to be formidable competitors in the tech market. How did this all start? What's to be gained? And who's winning?