Trump's Greenland tariff threats could be upended by Supreme Court decision

The Supreme Court Trump tariff decision could decide the fate of President Trump's threat to tariff NATO nations over control of Greenland.

# Trump's Greenland tariff threats could be upended by Supreme Court decision The Supreme Court Trump tariff decision could decide the fate of President Trump's threat to tariff NATO nations over control of Greenland. **Read the full article:** [CNBC](https://www.cnbc.com/2026/01/20/trump-greenland-tariffs-nato-supreme-court-decision.html) *This article was originally published by CNBC. MoneyWiseInc provides expert curation of the best financial content from trusted sources.*