The US State Department stated it would refuse entry permits to a group of five people, including a former EU commissioner, for allegedly seeking to "coerce" US-based social media platforms into silencing viewpoints they oppose.
"These radical activists and aggressive non-profits have promoted suppression campaigns by other governments - in each case focusing on American speakers and American companies," stated Secretary of State Marco Rubio.
The former European tech regulator implied that a "witch hunt" was taking place.
Breton was described as the "architect" of the European Union's online content law, which imposes content moderation on social media firms.
However, the act has frustrated certain right-leaning Americans who see it as seeking to censor conservative viewpoints. EU authorities denies this.
Breton has clashed with the billionaire entrepreneur, the world's richest man, over requirements to follow European regulations.
EU regulators recently fined X 120 million euros over its verification system – the inaugural penalty under the DSA. Regulators stated the platform's system was "deceptive" because the firm was not "properly authenticating users".
As a countermove, the platform prevented the Commission from running advertisements on its platform.
Responding to the visa ban, the former commissioner wrote on X: "Addressing the US: Censorship does not lie where you think it is."
Clare Melford, who heads the British disinformation research group, was also listed.
US Undersecretary of State the official accused the GDI of using American public funds "to exhort suppression and targeting of US expression and press".
A GDI spokesperson said the visa sanctions as "a repressive move on free expression and an egregious act of government censorship".
"These measures today are unethical, illegal, and un-American," the spokesperson added.
Imran Ahmed of the an online hate watchdog, a non-governmental organization that fights online hate and false information, was similarly issued a ban.
The undersecretary called Mr Ahmed a "key collaborator with efforts to weaponize the government against American people".
Also subject to bans were Anna-Lena von Hodenberg and Josephine Ballon of a German organization, which the US officials said helped enforce the DSA.
Responding, the two leaders called it an "act of repression by a administration that is increasingly disregarding the legal principles".
"We refuse to be silenced by a state that uses claims of suppression to muzzle those who defend human rights," they added.
The Secretary of State stated that steps had been taken to enact visa restrictions on "agents of the global censorship-industrial complex" who would be "generally barred from entering the United States".
"The administration has been explicit that his national sovereignty diplomatic stance opposes violations of American sovereignty. Extraterritorial overreach by foreign censors aimed at US expression is no exception," he added.
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