According to Techdirt, the US government interfered to get foreign sponsors to drop a conference because one of its panels was to ask whether the US engages in foreign information interference. The report frames this as an attack on free speech, noting that the panel's question was apparently enough to trigger official pressure on sponsors to withdraw.
The article also points to two figures, Michael Shellenberger and Matt Taibbi, who it says have done "tremendous damage" to free speech while "cosplaying" as free speech experts. It claims their work, particularly after being brought in by Elon Musk to report on the so-called "Twitter files," has contributed to an environment where such government interference becomes possible.
The piece does not provide additional detail on which foreign sponsors were involved or what specific actions the US government took, beyond saying it "interfered." It presents the incident as one of the more bizarre developments in recent free speech debates, suggesting a chilling effect from official pressure on conference funding and participation.