Trump threatened an unspecified added charge if South Korea does not join Alaska LNG.
Why it matters: The warning could complicate U.S.-South Korea trade talks and a proposed energy-investment package. Seoul has not completed participation, and reviewed public documents do not identify a binding financing obligation.
- On October 2, 2026, Trump said South Korea would face a higher, unspecified charge if it did not sign on to Alaska LNG shortly.
- South Korea's October 1, 2026, government announcement said the proposed investment remains subject to applicable procedures.
- Trump and Commerce Secretary Howard Lutnick put proposed Korean investment at about $54 billion, but the materials do not establish whether that figure covers Alaska LNG alone or the broader package.
- The proposed pipeline would run approximately 1,298 kilometers from Alaska's North Slope to a southern Alaska export terminal.
President Donald Trump warned South Korea on October 2, 2026, that he would increase an unspecified charge unless it quickly participates in the Alaska LNG project. Yonhap reported Trump saying: "Tell them if they don't sign shortly, I'm going to double it up, okay?" The supplied materials do not identify where Trump made the remark or whether he meant a tariff, a monetary contribution or another charge.
Trump linked the warning to the 2025 U.S.-South Korea trade understanding, which he has described as lowering tariffs in exchange for Korean investment in the United States. The U.S. trade fact sheet does not expressly require South Korea to finance Alaska LNG.
South Korea's October 1 government announcement listed Alaska LNG among three strategic investment projects being advanced under a bilateral memorandum. The announcement said the projects remain subject to applicable procedures. The reviewed public documents therefore do not identify a completed purchase commitment or binding financing obligation from a South Korean company or government agency; they do not, by themselves, settle the memorandum's legal status.
The proposed project would move North Slope gas through an approximately 1,298-kilometer pipeline to a liquefaction and export terminal in southern Alaska. Yonhap's account says Trump and Commerce Secretary Howard Lutnick valued proposed Korean investment at about $54 billion. The supplied materials do not establish whether that figure refers to Alaska LNG alone or the broader package of proposed Korean investments.
The trade fact sheet also documents proposed Korean commitments to purchase approximately 3.3 million tonnes of U.S. LNG annually, alongside shipbuilding and power-grid investments.
By the numbers
- $54 billion - proposed Korean investment value cited by Trump and Lutnick; the scope is unclear in the supplied materials
- 1,298 kilometers - approximate length of the proposed Alaska LNG pipeline
- 3.3 million tonnes - annual U.S. LNG purchases documented in the trade fact sheet
Yes, but: South Korea has not completed participation. Its government says the projects remain subject to applicable procedures, and the reviewed public documents do not identify a binding financing obligation.
What's next: South Korea's proposed participation remains subject to applicable procedures. Trump's warning set no stated deadline beyond saying it must sign on shortly.