[fiblye]

They won’t mandate a specific browser, but they can regulate functionality.

Piracy is already considered theft. Viewing webpages without ads is basically “stealing” web content. I would not be surprised in the slightest if some big advertiser runs with this idea and lobbies for strict legislation. And they likely would succeed, quite honestly. Congress doesn’t understand adblocking or the internet, but they have a vague idea of digital piracy.