Tom, partisan bloviating aside, your central assertion that Democrats and Republicans behave identically under the same circumstances is one that shouldn't be let slide with some proof to back it up. You'd take the same position if our positions were reversed.

This is one of those rare questions in politics for which there is a quantifiable metric: The number of subpoenas issued by the Oversight Committe during periods of different Party majorities and against different Party administrations. I tried to find historical statistics, but struck out.

Along the way, I did find the source of the stats in the Wikipedia article. It comes from a January 2006 (minority) report titled "Congressional Oversight of the Clinton Administration". I found it attached to a March 2007 letter from Waxman (PDF) to the House and Senate Judiciary Committees.

Perhaps you can take a shot at finding some hard numbers.