Is Donald Trump in mental decline? On Friday, January 5, during a rally in Mason City, Iowa, the former commander-in-chief ranted incoherently about magnets, leading social media users to suspect there may be something wrong with the 2024 presidential candidate. “All I know about magnets is this, give me a glass of water, let me drop it on the magnets, that’s the end of the magnets,” he began. “Why didn’t they use John Deere, why didn’t they bring in the John Deere people?” he continued the strange speech. The clip from the rally then circulated on X, formerly known as Twitter, where the publi…