Major pension fund to vote against Wal-Mart board

(Reuters) - The second largest U.S. public pension fund said on Tuesday it plans to vote all of its Wal-Mart Stores Inc WMT.N shares against the board in the wake of bribery allegations in Mexico that Wal-Mart officials failed to fully investigate.California State Teachers' Retirement System, or CalSTRS, has already sued current and former Wal-Mart executives, saying allegations the company paid millions of dollars of bribes in Mexico and a cover-up by Wal-Mart officials raised the question of whether top executives should remain in place.The allegations "indicate a breakdown of corporate governance and lack of oversight that should have