I agree that this is bs. Clinton was doing many things to ignore the ME terrorists as opposed to stopping them. He would have jumped at the chance to pin this on some white supremacist group. That would supplement the Clintons' claim of a VRWC plot against them as well as deflect attention from the Arabs.
I think this is total BS.
The Clinton Administration was trying to be friendly to the Islamists and it would hurt Clinton's agenda to admit that Islamic terrorists were involved in the OKC bombing. So Clinton had to protect the Islamists which meant he had to cover for the neo-Nazis because neo-Nazis and Islamists worked together on the bombing.
The Clinton Administration cast McVeigh and Nichols as the only ones involved in this crime and it fit the left's agenda to present McVeigh and Nichols as typical gun-owning Christian veteran residents of flyover country. I have no doubt that McVeigh and Nichols are guilty, but asking about their neo-Nazi connections would sooner or later lead to the Islamic terrorist connection to the OKC bombing and that would ruin Clinton's "legacy." This is just my uninformed opinion. Call me paranoid, but if Bill Clinton or Janet Reno stated that 1 + 1 = 2, I would immediately reconsider everything I know about math.