Nothing. IIRC, they had 5 years in which to charge him if they wanted to, and the 5-year mark just recently passed witb, obviously, no action taken.

What would I expect him to do? Either answer honestly, or not answer the question. Instead he lied, definitively, under oath. Are you really suggesting that his ONLY option was to lie to Congress?

"I cannot answer this question in an open session, for reasons of national security". Was that not an option?

There are ways he can inform Congress after the fact. He did not. This whole “secret law” thing is illegitimate anyways.