On Sunday morning, hours after the manosphere influencers Andrew and Tristan Tate were arrested by federal agents in Miami, one of their representatives reached out to Alina Habba.

Not long ago, Ms. Habba, a lawyer, was a vocal supporter of the Tate brothers as they faced allegations of human trafficking and other serious crimes in Romania and Britain. In a podcast appearance in January 2025, shortly after being named a counselor to President Trump, she told Andrew Tate, “I got your back over here.”

Now the brothers were in a federal detention center after Britain requested their extradition for a slew of new criminal charges there. Their representative wanted to know: Was Ms. Habba free to talk?

She did not respond, according to two people familiar with the outreach. It was a sign of the brothers’ eroding support among their onetime allies on the American right.

In recent years, the Tates had leveraged their enormous following of young men to cultivate support among Mr. Trump’s advisers, family members and other prominent conservatives. Those efforts paid off last year when, feeling pressure from members of the new Trump administration, Romanian prosecutors lifted a travel ban on the brothers, freeing them to leave the country and jet-set around the world.

But they are now facing a new level of legal jeopardy. Britain has issued 38 charges against them, including rape and sex trafficking; Andrew Tate was also charged with extreme pornography and indecent images of children. The brothers have denied all of the criminal accusations and called the charges politically motivated.