I have a pet theory, whether it is correct or not, who knows.
Most regions are defined by their history. European history, from what I remember, has alot of wars from one country to the next, and the people have slowly come to the realization that the only way you would be safe is to be protected by a strong national government.
The United states is defined throughout history has people that lost to stronger tribes/ governments....whether it is because of differences in religion, or you people were enslaved because you lost a war aginst a neighboring tribe, you came to america because no one would defen you. It tends to breed alot of distrust in those with power.