She should be challenged as to exactly what reprehensible things the US has done. Her upbringing is no excuse.
Actually, the former "realist" stance of the US in regard to certain Arab dictatorships over the last 30 years or so was regrettable at least, if not reprehensible. Part of the left's myopia toward Bush is that they refuse to acknowledge that he is dismantling that approach. Our unsavory "allies" in the region (Saudi Arabia and Egypt, to name two) can no longer count on the US to look the other way while they deny their citizens' basic freedoms. You would think the left would applaud this development, but they're so blinded by Bush-hate they haven't noticed it, or assume it's a sham.