Who else will go down with Holder's ship?

In response to House Judiciary Committee Investigating Whether Holder Lied To Congress:

I agree, but how far down does this go? Holder is the big fish here, but there needs to be some serious house-cleaning of his underlings, as they are just as complicit as Holder is. President Obama will probably not be directly touched with any of this, but if  his Cabinet and close advisers are targeted, the damage to Obama will be significant because his judgement to pick trustworthy and respectable advisers will be questioned.