>>, knowingly and willfully” falsifies or conceals information, including before a congressional committee’s inquiry, may also be fined or imprisoned up to five years...
Hillary Rotten Clinton did that repeatedly in her Benghazi testimony declining to name people she was communicating with, saying she’d forgotten and then Gowdy responding with the name and her immediately shifting her responses.
She knowingly and willfully concealed information and lied about it. Also with regards to the cover story that it was a protest that got out of hand, her message to her own daughter the day of the attack alerted Chelsea that it was a terrorist attack.
What about IG Horowitz claiming some FBI identities were concealed because they were counterintelligence when they weren’t? That was certainly “materially false”.