From Rathke's September 29 post to his personal blog:

My “friends” on the right seem to be using me as a source for an attack at yet another new target: Patrick Gaspard, political director at the White House.

I have huge admiration for Patrick and have enjoyed my dealings with him over the years. In almost 1400 blogs I've done, sometimes I don't get it right, call it a senior moment or whatever it might be, but reading the blogsphere with me as a source took me back searching for whether or not I could be causing a problem here inadvertently. Patrick was never on the staff of ACORN. I double checked with people I still know there, and it appears that I dropped a stitch there. Hopefully my misstatement won't lead to the White House throwing him in front of the bus in this rush to neo-McCarthyism that has become so prominent. In this case, my memory tricked me. I'm glad to carry the weight and simply say I made a mistake, and damned if I'm not sorry and hope no damage is done to a good man doing a hard job.

Previously:

MSNBC airs discredited allegation linking White House to ACORN