Why John Bolton is trending

<p>The former national security adviser during President Donald Trump’s first term is expected to plead guilty to mishandling sensitive national security information. CNN's Katelyn Polantz explains what investigators found in Bolton's home that led the Justice Department to file charges. Discover more videos, including live streams and exclusive storytelling, on our <a href="https://www.cnn.com/subscription/watch">Watch</a> page.</p>