You know, I think Chait makes an even more profound point than he thinks when he says:
"President Bush's thinly-veiled shot at Barack Obama was, in the words of Obama's spokesman, "an unprecedented political attack on foreign soil." Jamie objects, "Bush has every right to criticize" his political opponents. I think Jamie's missing the point of the last three words -- "on foreign soil." Obviously, it's not unprecedented for a president to criticize his political opponents. What's unprecedented is for a president to do so before the legislature of a foreign country."
Not just is it unprecedented, but it's really in bad taste. Can you imagine if Obama went to Germany or France and made a speech dissing Bush? The FOX News building would literally blow up from the power of their holier-than-thou indignation, and Bill O'Reilly...well we know what he would do: