https://www.cnet.com/news/supreme-court-declines-to-hear-appeal-of-obama-era-net-neutrality-rules/

The 2015 rules were rolled back by the Republican-led FCC last year, and they were officially taken off the books in June. But the Trump administration pushed the Supreme Court to hear the appeal that would have wiped the ruling from the books so that the parts of the decision upholding the FCC's authority could not be used as precedent in subsequent cases.

Groups supporting net neutrality and companies like Mozilla, which support the 2015 rules, are suing the FCC over its repeal.