9 Days on the Edge: 5 Warnings Korea's National Assembly US Investment Committee Restart Sends to the '$350 Billion Korea-US Deal' and Korean Businesses

At 10 AM today, the National Assembly's US Investment Special Committee restarted. If it fails to pass by the morning of March 9, Korea's negotiating leverage with the US disappears.

TL;DR

• Six major business groups (Korea Enterprises Federation, KCCI, KEF, KITA, KBIZ, KFMIA) issued a joint emergency appeal on March 3 — "The longer the delay, the weaker our negotiating power"
• The National Assembly Special Committee on US Investment held a plenary session today (March 4) at 10 AM, placing 9 bills on the agenda for deliberation
• Deadline: by the morning of March 9 — effectively requiring a vote within 5 days
• President Trump directly referenced Korea's legislative delays in January, hinting at potential tariff hikes
• Trade uncertainty deepens after the IEEPA tariff unconstitutionality ruling — legislative delay risks making the 25% differential tariff a reality

The Facts: What Happened Today

At 10 AM on March 4, 2026, the National Assembly's Special Committee on US Investment (the "US Investment Committee") convened a plenary session and formally resumed review of the 'Special Act for Strategic Korea-US Investment Management' (the US Investment Special Act).

The committee's mandate expires by the morning of March 9, meaning the sub-committee review and full vote must both be completed within that window. There are currently 9 competing bills pending in the National Assembly.

The day before, on March 3, six major business groups issued a joint emergency appeal:

"The longer the passage of the US Investment Special Act is delayed, the weaker Korea's negotiating leverage with the US becomes, and the harder it will be to realize the benefits of Korea-US economic cooperation."

• Joint statement by: Korea Enterprises Federation · Korea Chamber of Commerce and Industry · Korea Employers Federation · Korea International Trade Association · Korea Federation of SMEs · Korea Federation of Mid-sized Companies

Why This Became Such an Explosive Issue Right Now

1️⃣ Direct Pressure from Trump

President Trump publicly referenced Korea's legislative delays in January 2026, hinting at potential tariff increases. This was the direct spark for the heightened anxiety felt across the business community.

2️⃣ A More Complex Legal Landscape After the IEEPA Ruling

Following the US Supreme Court's February 20 ruling that IEEPA tariffs were unconstitutional, the Trump administration's prospect of imposing 25% differential tariffs through alternative legal tools — Sections 232 and 301 — became a real possibility. If the US Investment Special Act passes, Korea gains institutional leverage for negotiations. Without it, Korea sits at the table empty-handed.

3️⃣ The Worst Possible Timing — Created by the Iran War

With a KOSPI drop of 7.24% and the KRW/USD rate breaking 1,500 already underway, the fear that a legislative vacuum layered on top could accelerate foreign capital outflows intensified the urgency felt across the business community.

Background: What Is the US Investment Special Act?

5 Warnings: What Legislative Delay Leaves Behind for Korea

⚠️ Warning 1 — Loss of Negotiating Leverage

Without the special act, the government cannot institutionalize its US investment as a negotiating card. The "$350 billion pledge" remains a non-binding verbal declaration with no legal force.

⚠️ Warning 2 — The 25% Tariff Risk Becomes Real

The USTR's trade policy report released on March 3 explicitly named Korea's non-tariff barriers. Legislative delay hands the Trump administration justification to impose 25% differential tariffs.

⚠️ Warning 3 — Prolonged Corporate Uncertainty

The US investment plans of major conglomerates like Samsung, SK, and Hyundai are tied to the tax and financial support provisions in this bill. Legislative delay could translate directly into postponed groundbreaking dates at US factories.

⚠️ Warning 4 — Time Lost to Political Wrangling

Both the Democratic Party and the People Power Party have expressed broad agreement on passing the bill, but disagreements remain on details: the scope of contingent liabilities, guarantee limits, and which party's version of the bill gets adopted. These gaps must be bridged within 5 days.

⚠️ Warning 5 — Erosion of Global Credibility

If Korea fails to legislate its self-promised $350 billion investment within the deadline, this risks being interpreted internationally as an inability to follow through on commitments. The eyes of rating agencies like Moody's and Fitch are not irrelevant here.

Outlook: Can the March 9 Vote Happen?

Optimistic scenario (55%): Bipartisan agreement reached → vote completed by the morning of March 9. Korea secures a negotiating card with Trump.

Delay scenario (35%): Disagreements on specific provisions drag out sub-committee review → committee mandate expires → emergency session of the National Assembly required. Minimum 2–3 weeks of additional delay.

Rejection/lapse scenario (10%): Political conflict escalates, bill fails → possible trigger of hardline US response.

✅ Individual & Business Checklist

References

• Six Business Groups' Joint Appeal — Chosun Ilbo (2026.03.04)
• US Investment Committee Restarts Today — Edaily/Daum (2026.03.04)
• Six Business Groups Urge Swift Passage — Korea Herald (2026.03.03)
• Pass special US investment act without partisan blame — Korea JoongAng Daily editorial (2026.03.04)
• Six major business groups back quick passage — Korea JoongAng Daily (2026.03.03)
• National Assembly US Investment Committee Restarts — KBS News
• Six Business Groups: "Pass the US Investment Special Act by March 9" — Korea Daily USA (2026.03.02)

Image Credit

• National Assembly of Korea — Wikimedia Commons (CC BY-SA 3.0)