The Enforcement Directorate (ED) has sent show-cause notices to leading Indian business groups, including the Tatas, Birlas, Godrejs, Jindals, and high-profile companies such as the Dabhol Power Company, IG Petrochemicals, Herdillia Chemicals, Lanyard Foods, Wim Plast and Sterlite Industries, as part of a wide probe into their alleged foreign exchange violations over the last few years. Even a clutch of public sector undertakings figure in the ED