US attorney general Pam Bondi has told at least 10 tech companies, including Apple, Microsoft, Amazon, and Google, that they have “incurred no liability” for supporting TikTok despite the federal ban on providing services to the popular video-sharing app, according to letters disclosed on Thursday.

Under orders from President Donald Trump, Bondi has refused to enforce a law passed by Congress last year that classifies TikTok as a national security risk because of its ties to China and bars companies from distributing the app to US consumers.

TikTok can dodge the ban by reducing the ownership Chinese entities have in its US operations, and Trump has described those negotiations as ongoing. But constitutional experts have questioned the legality of executive orders by Trump that delay enforcement of the ban as those sales talks drag out.

Early this year, TikTok disappeared from the US app stores of Apple and Google after the ban went into effect. But despite the law still being on the books, TikTok returned to the stores after just a 26-day hiatus. Several media outlets reported at the time that Bondi had written to Apple and Google promising they would not face prosecution. But the letters had not been publicly disclosed until Thursday.

Silicon Valley software engineer Tony Tan had sought the letters under the Freedom of Information Act. The Department of Justice initially claimed it did not have records matching Tan’s request. He sued the department, which ended up releasing several letters to him on Thursday.

A Justice Department spokesperson did not immediately respond to a request for comment.

The disclosures show the first letters were dated January 30 and sent to four companies—Microsoft, Google, Apple, and conten...