# U.S. President Donald Trump on Wednesday signed a proclamation to address national security concerns related to semiconductor imports.

*semiconductor · news · 2026-01-17 · MarketScreener*

## Key points

- The 25% U.S. tariff currently targets advanced Nvidia and AMD chips, not memory chips.
- South Korean memory chip exports are currently excluded from the first phase of tariffs.
- U.S. Commerce Secretary warned non-U.S. investing chipmakers may face tariffs up to 100%.
- Future tariff phases could expand scope to broader semiconductor imports and derivative products.

**Companies:** Nvidia, AMD, Micron
**Countries:** South Korea, United States, Taiwan

[Read the full story on MarketScreener](https://www.marketscreener.com/news/south-korea-says-us-chip-tariff-to-have-limited-immediate-impact-ce7e58dfdb8ef327)

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