There is no denying that compared to almost every other developed country the US is very conservative, in what other country could Michelle Bachmann be a serious contender for the presidential nominee.
I would argue she isn't a very serious candidate here, she has a very small chance of being the GOP nominee and basically zero chance of beating Obama.
Just because someone calls you that doesn't make it true. Asshats say a lot of stupid sh**t. You support the war in Iraq you're suddenly a Neo-Con. Support drug legalization, you're a hippie stoner. Don't like Israel, you're an anti-Semite.
Different strokes for different fokes? And it's not like we are more conservative about everything. Our gun laws are much more liberal than yours. But give it time, once the baby boomers die off we will be less conservative.