The Democrats do it all the time, it's business as usual... Repubs do it, it is criminal...
Large segments of the Clinton Administration lied to the American people time and time again as part of official policy - and it was downplayed by the media as either lies about sex, lies about personal matters, or lies in response to a right-wing witch hunt.
The Bush Administration simply follows intel on Iraqi WMDs that is in agreement with just about every foreign intel agency AND is also in agreement with intel assesments during the Clinton Administration - and they are branded as liars.
It's our burden - we will always be held to a much higher standard than the Dems. But it's also one reason why we have been kicking donkey rump for the last three elections.