Senator Hutchison spoke on the Senate floor last week in support of the Cornyn amendment. She wore a black jacket with a pattern:
As you may recall, we have seen this problem with patterns on television before. But this one is particularly dizzying. And if you're one of my readers who doesn't usually click the "play" button on these posts, let me clarify that this jacket is black. There are no colors in this pattern.
It's difficult to tell from this footage, but I suspect this effect is the result of not just pattern but also texture, which can also bend light in a way that is confusing to a camera lens.