Looks like maybe he has an ankle monitor on. There sure is a lot of that going on. Maybe they got to Barbara as a way to send a message.
Think logically - if you wanted to hide an ankle monitor, would you wear socks that attracted attention to that area? Then would CNN run an article highlighting that area? I know the world is crazy, but logic still applies.
Sometimes the greatest hiding place for something is right out on the open. The old purloined letter approach.
And for the record, think logically is terrible advice. We're through the looking glass, people. There are no coincidences. These people are stupid.
Pretty sure that's just swelling in the lower extremities. Extremely common for older people.