President Trump's court loss adds another layer of uncertainty to global shipping, from questions about refunds to status of trade deals and the tariff plan B.

If the Supreme Court upholds the ruling, President Donald Trump would lose some, but not all, of his broad tariff powers.

It is unclear exactly where the case goes from here as Washington faces potential refunds and diplomatic fallout.

President Trump's court loss adds another layer of uncertainty to global shipping, from questions about refunds to status of trade deals and the tariff plan B.

Previously imposed tariffs could be refunded, but not without some red tape.