The U.S. vice president said the Alaska natural gas project is moving forward with South Korea, while Seoul says its involvement depends on the economic justification of this investment.

According to Bloomberg, on Monday, U.S. Vice President J.D. Vance, on his way to Alaska, told reporters: “I think this is going to happen. It’s clear that there are still some details that have to be worked out, and the Koreans have talked about that.”

He added: “But when there’s demand for this commodity and a strong demand for American natural gas, I think we can get it done.” Vance said the pipeline is something the United States and many of its Asian friends want to see—not just South Korea, but Japan as well, which has a strong interest in it.

Last week, Donald Trump, the U.S. president, announced a $54 billion plan for this liquefied natural gas export project as the centerpiece of South Korea’s investment commitment in the United States.