American diplomatic officials declared it would refuse entry permits to five individuals, including a ex-European Union official, for allegedly seeking to "force" American online companies into suppressing opinions they oppose.
"These individuals and weaponized NGOs have promoted suppression campaigns by foreign states - in each case focusing on US voices and US firms," stated Secretary of State the official.
Thierry Breton suggested that a "targeted campaign" was occurring.
Breton was described as the "mastermind" of the EU's Digital Services Act (DSA), which enforces content moderation on social media firms.
Yet, it has angered certain right-leaning Americans who view it as seeking to censor conservative viewpoints. EU authorities denies this.
Breton has clashed with the billionaire entrepreneur, owner of platform X, over requirements to follow EU rules.
The European Commission recently fined X €120m over its verification system – the first fine under the DSA. It said the platform's system was "deceptive" because the firm was not "properly authenticating users".
As a countermove, the platform blocked the European body from making adverts on its platform.
Responding to the entry restriction, the former commissioner wrote on X: "To our American friends: Speech suppression does not lie where you think it is."
Another listed individual, who heads the British disinformation research group, was included in the sanctions.
US Undersecretary of State the official alleged the GDI of using US taxpayer money "to encourage suppression and targeting of US expression and media".
A representative for the group characterized the entry bans as "a repressive move on free expression and a blatant example of state-led suppression".
"These measures today are immoral, illegal, and contrary to American values," they stated.
Imran Ahmed of the Center for Countering Digital Hate (CCDH), a nonprofit that combats digital hatred and misinformation, was also handed a ban.
The undersecretary called Mr Ahmed a "primary partner with efforts to weaponize the government against American people".
Additionally facing restrictions were Anna-Lena von Hodenberg and Josephine Ballon of a German organization, which the State Department said helped enforce the DSA.
In a statement, the two CEOs described it as an "attempt to silence by a administration that is showing disregard for the legal principles".
"We will not be intimidated by a state that uses accusations of censorship to muzzle those who defend human rights," they added.
Rubio said that action was initiated to impose entry bans on "agents of the international suppression network" who would be "typically prohibited from entering the United States".
"President Trump has been explicit that his America First foreign policy opposes infringements of US autonomy. Extraterritorial overreach by foreign censors targeting US expression is unacceptable," he added.
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