The author of the song (don't recall her name, not Martina singing it) has said it is a pro-choice song, the independence of women from all men because she can choose to remove evidence of him, re: the child she carries, from her womb.
It has nothing to do with American Freedom (and the "roll the stone away" line is outrageously insulting to boot). She was one of the libs all incensed during the 2008 campaign when the McCain/Palin people played it at their rallies. It's not in any way about American Freedom, that Hannity continues to use it shows he knows nothing about the song as well.
And every time Sean plays it, she donates the royalties to Planned Parenthood.
Martina McBride and the song is about spousal abuse.