It's slowly happening. Several countries have started to issue bans like Canada and Australia in addition to the EU and recently China, although a lot of plastic pollution in the ocean is from fishing gear. The California Plastic Waste Reduction Regulations Initiative proposition qualified for the 2022 ballot, and SB 343 was recently passed. There's also a federal bill in the US, S.984, but that's unlikely to get past the Senate filibuster.
https://en.wikipedia.org/wiki/Plastic_pollution#Reduction_in...