Vanguard Group Inc., the largest US manager of stock and bond mutual funds, has introduced criteria to determine whether companies meet human-rights standards. The policy, developed in the past six months, is designed to identify companies whose "direct involvement in crimes against humanity or patterns of egregious abuses of human rights would warrant engagement of potential divestment," the company said in a letter to shareholders that was filed with the Securities and Exchange Commission...Investors Against Genocide...succeeded in placing proposed investing guidelines on the agenda for 30 selected Vanguard funds at the company's July 2 annual shareholder meeting.