Before clicking the link, I thought this was going to be a completely different science fiction story about (U.S.) congressmen who leave the business of legisla

Before clicking the link, I thought this was going to be a completely different science fiction story about (U.S.) congressmen who leave the business of legislative voting to AI copies (brain scans) of themselves while the original travels full-time to raise funds and votes. After a secret congressional hearing is held on a matter of national security, the scanned copies begin voting in ways counter-to or that don't make sense to the original versions, but the copes are not allowed to reveal what was in the content of that hearing that changed their minds. I don't remember where I read that plot synopsis, so I might have some details wrong. (If it's a book I haven't read it, or it could have been someone's description of a story idea.)