Movement I would say not really, at least to my knowledge. Discussion in the media, I'd say the only time I think it was seriously discussed was with Ross Perot's candidacy in 1992 and even then it was focused on Perot the individual and not on any systemic change to the two party system. The major thing is usually it gets brought up in the context of a (single) third party which is then dismissed as being unviable because a (single) third party would simply help the other opposing side. Changing the US Congress system to something more like a Parliamentary system where getting something like 2% of votes guarantees representation in the national congress has never really been discussed outside of college classrooms. Both parties have too much money and power and self-interest now and things are too tribal for me to see it happening anytime soon, if ever. I think the 1990s would have been the time for such a thing as now things are two divided along two tribal lines.
Personally, I think those types of multi-party systems make a lot more sense and function better but too many people in the US are tied to an almost religious worship of a 200+ year-old document that people truly believe is perfect and could never be improved upon by us modern day thinkers.
