She makes crap up.
It's one thing if you're a fiction writer, but even so some of the stuff you say has to be halfway plausible. Bachmann's not the best in the business on that score. There's one quote in that link where she admits that she's not a "deep thinker." Got that right, sister. I confess you're some kind of thinker; I'm leaning toward "knee-jerk."
And then there's just the Deep Left Field thinker: “But we also know that the very founders that wrote those documents worked tirelessly until slavery was no more in the United States.” No, Michele, they didn't. The founders did spend a lot of time and use a lot of ink on slavery issues, but mostly what they were trying to do was keep the peace. There were lots of concessions made in favor of slavery, lousy laws passed, Dred Scott denied, granted, and denied his freedom again. It was a real hairball.
Interesting to note that at the time the diehard conservatives were Southern Democrats, hellbound to maintain the status quo, and it was the Republican softie Lincoln who did the unpopular anti-business thing that upset so many people.
But my take on Bachmann and the main reason she can't be President of these United States is this: she's a big noise in the Tea Party. And say what you will, but the Tea Party is a divisive element in American politics at this time. It seems to attract the more polarized and more polarizing candidates (I'm looking at you, Palin, you and your whole airtime-hogging family), people who are great at generating sound bites and derailing the train of thought in Congress. Can we focus on running the country again, please? Less of this crap about whether gays should be allowed to marry or not?
If your whole argument of whether gays shouldn't be allowed to marry is Bible based, step aside. Church and state, separation of: go read that. We've got bigger, more important fish to fry.
Bachmann's got some weird ideas about how people work, how government works, and how people and governments should work together. While I'm fully in favor of weird at most times - it makes life more interesting than everyone all being the same - I sure as hell don't want it in government.