Vanguard Funds genocide resolution on proxy

If you hold shares in any Vanguard Funds, the Social Justice Ministry asks you to prayerfully consider voting in favor of this shareholder resolution:

Shareholders request that the board institute procedures to prevent holding investments in companies that, in the judgment of the board, substantially contribute to genocide or crimes against humanity, the most egregious violations of human rights.

This resolution is relevant to the conflict in Darfur and, of course, to the Democratic Republic of Congo. Your proxy information will give the rationale behind the shareholder resolution and Vanguard's response.
I checked with Save Darfur to seek insight into Vanguard's claim that the resolution is redundant to their current practices. I found their link to this 4/21/09 Huffington Post article to be helpful: Don’t Trust Vanguard: Vote For Genocide-free Investing .