Each week, InsideCounsel.com brings you updates on the top legal news stories affecting in-house counsel. Highlights from the week of Dec. 13-17 include Health Care Law Ruled Unconstitutional, which discusses a Virginia ruling that the keystone provision in the Obama health care law is unconstitutional; Sierra Club Sues Exxon over Baytown Refinery Pollution, a story about a lawsuit filed against Exxon Mobil Corp for five years of excess pollution; and BP Falls Most in Four Months After U.S. Files Lawsuit, which details the drop in shares BP has suffered following a lawsuit filed by the Obama Administration claiming BP violated environmental laws.

Each week, InsideCounsel.com brings you updates on the top legal news stories affecting in-house counsel. Highlights from the week of Dec. 13-17 include Health Care Law Ruled Unconstitutional, which discusses a Virginia ruling that the keystone provision in the Obama health care law is unconstitutional; Sierra Club Sues Exxon over Baytown Refinery Pollution, a story about a lawsuit filed against Exxon Mobil Corp for five years of excess pollution; and BP Falls Most in Four Months After U.S. Files Lawsuit, which details the drop in shares BP has suffered following a lawsuit filed by the Obama Administration claiming BP violated environmental laws.