A month into President Donald Trump’s second term, lawyers for the Republican administration seem intent on provoking a legal fight to overturn a 90-year-old Supreme Court decision known as Humphrey’s Executor.

TikTok’s future in the U.S. appeared uncertain on Friday after a federal appeals court rejected a legal challenge the company brought against a law that requires it to cut ties with its China-based parent company or be banned by mid-January.