President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE is demanding that South Korea increase their funding for American troops deployed on the peninsula, according to The Wall Street Journal.

The demand has reportedly soured negotiations over the Special Measures Agreement, a defense pact between the two countries.

The Special Measures Agreement's five-year contract expires Dec. 31 and currently requires South Korea to pay $830 million per year to the U.S. for the more than 28,500 American troops based in the country.

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The Journal reports that Trump is pushing for between $1.2 and $1.6 billion per year.

South Korean President Moon Jae-in has been telling his county's officials that he isn't willing to pay more, according to the report, and leaders of the top five political parties have reportedly said they can't absorb an increase.

A representative from the State Department declined to comment to The Hill on internal deliberations, but noted that the agency released a statement on the SMA in March which indicated that “both delegations are committed to developing an agreement that strengthens the U.S.-ROK Alliance and that ensures the security of the ROK and its people.”

The friction with Seoul comes as the U.S. is heavily pursuing North Korean denuclearization. Talks between the U.S. and North Korean leader Kim Jong Un have stalled lately as Secretary of State Mike Pompeo Michael (Mike) Richard PompeoOvernight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers Overnight Defense: House Democrats unveil stopgap spending measure to GOP opposition | Bill includes .6B for new subs | Trump issues Iran sanctions after world shrugs at US action at UN Navalny calls on Russia to return clothes he was wearing when he fell ill MORE and Kim canceled a meeting last month.

However, Moon and his northern counterpart are planning a summit and have already made significant moves toward warming relations.