I don’t know. So an important fact you have to consider is that we are only seeing evidence presented that was already cleared to be released. That’s why many think the indictment was brought immediately following the ISIS attack on Iran. There are likely many much worse documents he had in his possession but prosecution is prevented from showing it or using it as evidence so defense may not necessarily require clearance. Regardless federal courts have the ability to compel a lawyer to take on a case for clients who cannot otherwise hire representation. I imagine they could easily find a lawyer with proper clearance if it was necessary.