Around March 22, 2007, Judge Lowell Reid of the Eastern District of Pennsylvania permanently enjoined the Child Online Protection Act of 1998, as explained in he First Amendment Encyclopedia, link The actual opinion is on a site called CaseText, here.
The text of the opinion, if read carefully, seems to imply (around page 50 ff) that 'freedom of reach' created by the Internet is subsumed by the First Amendment.
Salon has a story on the opinion by Joan Walsh, who testified at the COPA Trial in Philadelphia in October 2006. I attended one day of the trial in Philadelphia, on Oct. 30, 2006. I was a subplaintiff under Electronic Frontier Foundation. I had lunch with the lawyers in a Philly cheesesteak place near the courthouse. I remember the day well.
Do not confuse this with COPPA, the Children's Online Privacy Protection Act of 1998, which generated controversy at the end of 2019 with the 'made for kids' issue.
Back in March 1997 I had attended the SCOTUS hearing on the original Communications Decency Act form the three-minute line.