President Trump has warned of disaster if the Supreme Court overturns his signature tariffs. For starters, it would unleash a bureaucratic nightmare involving reams of refund paper checks. Should the court uphold a US Court of Appeals ruling that Trump’s country-based tariffs are illegal, the government could owe the bulk of the $165 billion in duties collected so far this fiscal year back to companies that paid them. But they won’t have an easy time getting their money back; refunds are typically issued slowly and while the administration could streamline the process, experts fear that’s unlikely. …That means Trump likely won’t part with the funds easily if the tariffs are struck down, and the administration is expected to move quickly to reimpose levies using other legal authorities if that happens. The Supreme Court is expected to hear arguments in November in the case.