A US judge has blocked the detention of a British social media campaigner, citing concerns related to free speech, civil liberties, and the limits of immigration authority.

The ruling was delivered by a federal judge who questioned the legality of detaining an individual primarily based on their online political activity. The campaigner, known for actively expressing views on social and political issues through social media platforms, was facing possible detention under US immigration enforcement actions.

During the hearing, the court emphasized that freedom of expression remains a core constitutional value in the United States. The judge noted that holding or detaining someone without clear evidence of wrongdoing could set a dangerous precedent, especially in cases involving political speech and digital activism.

Legal analysts believe the decision reinforces the idea that immigration powers cannot be used arbitrarily or as a tool to suppress dissenting voices. The court also highlighted that lawful presence and peaceful expression should not be treated as grounds for detention.

Human rights organizations have welcomed the judgment, calling it a strong message in favor of civil liberties and democratic values. They argue that the case reflects growing global concerns over how governments respond to activists and campaigners in the digital age.

The ruling does not completely end the legal process, as authorities may still pursue further action through lawful means. However, the decision provides temporary relief to the campaigner and underscores judicial oversight over executive power.

The case has drawn attention both in the United States and the United Kingdom, with observers closely watching how it may influence future cases involving foreign nationals, online activism, and freedom of speech.