"Rules that stop at the state line -- including rules for important concerns such as privacy -- don't work in today's interconnected world," Verizon says in a new FCC filing.
As of this week, the mobile carrier is throttling video on all "unlimited" data plans.
"This Court should not permit the government to trample upon the privacy of the individuals interacting with the website," DreamHost argues.
A proposed law aimed at curbing online sex trafficking has picked up some support in Congress, but is also drawing heated opposition from Silicon Valley.
A broad array of digital rights groups are gearing up to fight a Senate bill that could weaken current protections for Web platforms.