Ex-US cyber chief reacts to Russian oligarch's post about election interference

Yevgeny Prigozhin, a Kremlin-linked oligarch known as "Vladimir Putin's chef," appears to admit to Russian interference in US elections in a Telegram post, saying that Russia has interfered, is interfering and will continue to interfere in the US democratic process. Former senior Homeland Security official Christopher Krebs joins CNN's Jake Tapper to discuss.