John Fund, in a Wall Street Journal opinion piece has this to say:

Given his longstanding ties with Acorn, President Obama's protestations of ignorance or disinterest in the group's latest scandal seem preposterous. Here's hoping White House reporters will press the president to clarify just how much he really knows about Acorn and when he knew it.

Here's hoping indeed, but don't hold your breath.
(This post, and last one too, via Instapundit. Just go read Instapundit yourself already.)