Thank you for posting this! As an addendum, there is a specific link on the Students For a Free Tibet site provides you with a letter template and automatically locates and sends your email to congress and reps.

actionnetwork.org/campaign/supporttibet

I modified the letter to highlight the actions which the reps should take--

"I am urging you take a stand on the following issues which would greatly help the people of Tibet who have endured 60 years of violence and oppression by the Chinese while the world has stood by and watched.

As the situation in Lhasa is now critical and the world media is trained on the actions of the Chinese, please follow the moral obligations of our country's commitment to freedom and democracy by:

1) Speaking out forcefully against China's brutal crackdown in Tibet.

2) Strongly supporting the Dalai Lama's call for a United Nations team of investigators to go to Tibet as soon as possible.

3) Urge China to withdraw military and security forces, release those detained, allow peaceful protest, cease house-to-house searches and refrain from any further arrests of Tibetan protesters

4) Demand that China immediately allow foreign journalists back into all Tibetan areas (Tibetan Autonomous Region as well as the Tibetan areas of Gansu, Qinghai and Sichuan). "

Please speak out now to help ensure that further violence against Tibetans is stopped."