Sector-specific US tariffs remain intact. (EPA Images pic)WASHINGTON : US President Donald Trump’s administration has refunded about US$100 billion in tariffs since the Supreme Court struck down a wave of his duties this year, court filings show. The president’s sector-specific tariffs, which rely on different justifications, remain intact. Of that total amount, refunds of around US$100 billion had been completed and sent to the treasury department for disbursement, the official added. Since the Supreme Court’s ruling in February, Trump has turned to new means to reimpose tariffs on dozens of partners, sparking further court challenges.