When my mom was a kid, subpoenas meant that you showed up in court, not that you just said the people issuing the subpoenas were pissy piss piss pants and refused to go.

Granted, I didn't spend much time pre-Bush paying attention to the intersection of subpoena activity and our government, but it strikes me as a particularly novel development that Republicans can simply declare any investigation a partisan witchhunt and then say fuck the law.