Senator Chris Coons (D-DE) said Tuesday on “CNN This Morning” that what Democrats knew about President Joe Biden’s cognitive decline was not relevant. Host Kasie Hunt said, “We know that the one of the principle lines of attacks, and I’ve talked to sources who say the polling shows this is a serious vulnerability that Republicans are going to say that Kamala Harris knew that President Biden wasn’t up to four more years. I mean, they would say that about you, I think as well, and they’re going to allege a coverup. They’re going to say she knew she covered it...