whitehouse.gov has been redesigned. It now accepts petitions for people to vote on. I think this is how our government should have been working a long time ago. Check it out. I saw this on Reddit. 3 petitions are of particular interest to the Atheist community as listed below. I think it is way past the time these are addressed.
REMOVE THE TAX EXEMPTION FOR CHURCHES
REMOVE IN GOD WE TRUST FROM CURRENCY
REMOVE UNDER GOD FROM PLEDGE OF ALLEGIANCE
You don't need these links. You can just go there and sign up and a list appears of these and more. Lets show a lot of support here.