Troubling developments, from Washington Post, in response to lower-court decision and other factors:

The U.S. federal government has stopped warning some social networks about foreign disinformation campaigns on their platforms, reversing a years-long approach to preventing Russia and other actors from interfering in American politics less than a year before the U.S. presidential elections, according to company officials.

Meta no longer receives notifications of global influence campaigns from the Biden administration, halting a prolonged partnership between the federal government and the world’s largest social media company, senior security officials said Wednesday. Federal agencies have also stopped communicating about political disinformation with Pinterest, according to the company.

The developments underscore the far-reaching impact of a conservative legal campaign against initiatives established to avoid a repeat of the 2016 election, when Russia manipulated social media in an attempt to sow chaos and swing the vote for Donald Trump.

For months, researchers in government and academia have warned that a barrage of lawsuits, congressional demands and online attacks are having a chilling effect on programs intended to combat health and election misinformation. But the shift in communications about foreign meddling signals how ongoing litigation and Republican probes in Congress are unwinding efforts once viewed as critical to protecting U.S. national security interests.