How do you support your statement that Laura Bush is checkmating the Dims? Accusing her own base of sexism even before the Dims do it is contempt.
I don't think you read what she said or didn't say. "could" does NOT equal "are" or "is". She did not say what you are positing she has.
If someone, say, posits that you "could" be a nazi -- does this mean you are one, have been one, might be one? What do you think the word "could" means?
She said it was "possible".