Putting the oxymoron aside, they've already had an investigation, as I recall, and issued a report basically saying Joe Wilson is a lying sack of chit.
I suggest we get a copy of that report and/or call our Senators and remind them of that little tidbit.
Woodward was on Larry King's show last week and tried to hand the report to Sen. Chris Dodd, who refused to take it. Woodward, surprisingly, had to be the one to remind the left that they UNANIMOUSLY signed the report which showed that Wilson lied. Repeatedly.