A hand written letter has been sent to the Governor of Oregon on official Congressional letterhead. Here’s the transcript:

August 3, 2011

Dear Governor Kitzhaber, 

Serving as a United States Congressman has been the honor of my life.  There is no other job where you get up every day and ask, ‘How can I try to make the world a better place today?’

Of particular significance to me in this effort to improve the world is investing more in science and education. Also, I believe my support of people around the world who are struggling for human rights and civil liberties will ultimately bear fruit in the world which is not just and peaceful. 

However great the honor and engaging the work, there comes a time to hand on the privilege of office. That time has come. With gratitude to the people of Oregon and confidence that our best days are yet to come, I hereby resign as their United States Congresman for the First Congressional District of Oregon effective immediately.

God Bless the people of Oregon and the United States of America. 

I am very gratefully yours,

David Wu 

Letter here.