I think MFP and Muttley have summed up why everything possible needs to be done to stop Trump from running in 2024. The 25th Amendment would do this, but I think Pence is too much of a coward to activate it, and I think I'm correct that a failed impeachment, even a second one will not be enough. Trump is not going to fade away, he'll agitate and ferment trouble in the country for as long as he's able. The last hope to stop him will be the numerous legal cases waiting to be brought against him when he loses his presidential immunity.