From the Guardian:
The speaker of the US House of Representatives yesterday called on the international community to condemn China for its crushing of protests in Tibet, saying the crisis was a challenge to the "conscience of the world".

Pelosi said it was incumbent on "freedom-loving people throughout the world" to speak out against China's "oppression". If they did not, "we have lost all moral authority to speak on behalf of human rights anywhere in the world".

Here's her press release from March 8th on this topic.