Though I agree with you, I wanted to point out that sadly,
religious lobbying has increased five-fold since the 1970's in the US.
Considering the state of politics in the US (the ridiculous clowns that we seriously consider for the highest office, the prevalence of religion in both major parties, "faith-based" initiatives, legislating religious morality (e.g. prop 8), wasting time
during a recession to "re-affirm" an unconstitutional national motto ("In God We Trust"), and the deep partisan divide -- I can't decide whether I should just stop caring since I'm moving to Canada or if I should be crushingly disappointed that so far America has utterly failed to be what I envisioned its dream to be.
Edit -- "utterly failed" may be a bit harsh, but there's simply no reason for it to have failed as much as it has and (as far as I can tell) will continue to.