Former FCC Chairman Ajit Pai asked the Supreme Court to uphold the federal TikTok ban.Alex Wong/Getty ImagesAjit Pai urged the Supreme Court to uphold a federal law that could ban TikTok.The TikTok law requires its Chinese parent company, ByteDance, to divest to avoid a US ban.Pai, the FCC chair during Trump's first term, led efforts against other Chinese tech firms.Former Federal Communications Commission Chairman Ajit Pai is siding with Congress — and against his former boss, president-elect Donald Trump — in support of a federal law that could ban TikTok.In a brief filed with the Supreme Court on Friday, Pai joined Thomas Feddo, an official in the Department of Treasury during Trump's first term, to call on the court to uphold the law, telling the justices that it has precedent.Trump also filed a brief with the Supreme Court on Friday, asking the court to put the law on hold.