According to our founding fathers, they wanted us to elect Christian rulers.
It is important because it impacts how you view your job.
They had a really peculiar way of enforcing it...
Article VI, Section 3 of the U.S. Constitution:
The Senators and Representatives before mentioned, and the members of the several state legislatures, and all executive and judicial officers, both of the United States and of the several states, shall be bound by oath or affirmation, to support this Constitution; but no religious test shall ever be required as a qualification to any office or public trust under the United States.
And before you start giving me the hooey about that referring only to the different Christian denominations, you should go back and read the actual debates about the clause. The founders were quite clear that even 'Mohametans' and 'Gintoos' were eligible for public office.
So Baptists including Bill Clinton and Jimmy Carter pass the test, but Mitt Romney doesn't?