Trump administration’s unprecedented attack on Anthropic sparks Silicon Valley chaos, and Big Tech is now showing signs of rebellion

America’s biggest tech companies have thrown their weight behind Anthropic in its lawsuit against leaders in the Trump Administration, signaling a rare moment of unity in Silicon Valley, as reported by the BBC. Giants like Google, Amazon, Apple, and Microsoft have publicly supported Anthropic’s legal action. They aim to overturn Defense Secretary Pete Hegseth’s unprecedented decision to label the AI company a “supply chain risk.“

These tech titans expressed serious concerns in legal filings about the government’s retaliation against Anthropic. The company had refused to allow its powerful AI tools to be used in mass surveillance and autonomous weapons. Microsoft, a company that works extensively with the US government and the Department of Defense (DoD), warned that the government’s behavior could cause “broad negative ramifications for the entire technology sector.” Microsoft agrees with Anthropic that AI tools “should not be used to conduct domestic mass surveillance or put the country in a position where autonomous machines could independently start a war.”

A joint amicus filing, which is a brief from parties with a strong interest in a case, also came from several groups, including the Chamber of Progress. This tech advocacy group, funded by and representing major players like Google, Apple, Amazon, and Nvidia, shares concerns over the government punishing Anthropic for its public speech.

Anthropic’s lawsuit claims its free speech rights have been violated through government retaliation for its public statements

The Chamber of Progress stressed that it is “ideologically diverse” but remains deeply concerned about the impact of the government’s action on protections under the First Amendment of the US Constitution. It’s interesting to note that Facebook owner Meta is a holdout among major tech companies backing Anthropic’s action, having left the Chamber of Progress in 2025 after years of membership. The Chamber of Progress stated that its current members all “oppose governmental attempts to force or restrict access to speech.”

Secretary Hegseth, President Donald Trump, and others have accused the company of being “woke.” The joint amicus brief called the department’s labeling of Anthropic a risk “a potentially ruinous sanction” for businesses and little more than a “temper tantrum.” The brief goes on to say, “If left in place, that sanction imposes a culture of coercion, complicity, and silence, in which the public understands that the government will use any means at its disposal to punish those who dare to disagree.”

Support for Anthropic isn’t just coming from corporate giants. Almost 40 OpenAI and Google employees filed another amicus brief. Even two dozen former high-ranking US military officials filed their own brief, stating that the government’s actions “send the message that investing in national security carries the risk of capricious retaliation or disproportionate punishment for voicing disagreement.”

This show of support from Big Tech might seem surprising, especially considering that many executives at these firms have supported and donated large sums of money to President Trump since his return to office last year. However, the suddenness and severity of the action against Anthropic appear to have crossed a line for these major tech companies.