Hastert under investigation in bribery scandal?

Interesting situation here. ABC News is reporting that House Speaker Dennis Hastert (R-IL) is being investigated for his role in the Jack Abramoff scandal (bribery, perhaps?). However, the Dept. of Justice says that no such investigation is occurring.

If ABC News is correct, then I think it's safe to say that Hastert's beef with the William Jefferson bribery investigation has jack sh#t to do with Hastert's fidelity to the Constitution, and has everything to do with self-preservation and fear of being similarly vulnerable. Instapundit comes to the same conclusion.

If ABC News is wrong, then I suspect that Dan Rather and Mary Mapes have been hired by the network! ABC News stands by their story and makes several anonymous references to "officials" and "law enforcement sources", which is great reason to be suspicious of the validity of the story.