Donald Trump has signed a revised trade pact with South Korea, aimed at expanding opportunities for US carmakers and pharmaceutical companies.
It marks the first such agreement finalised by the US president, who has promised to overhaul his country’s trade relationships.
At a press conference in New York, Mr Trump called the updates to the 2012 agreement "a very big deal".
The White House first announced the outline of the changes in March.
Most analysts said the revisions were relatively modest.
The completion of the pact came as Mr Trump faced a number of political controversies, including the sexual harassment allegations against his nominee to the Supreme Court.
Businesses are also worried about the impact of retaliatory tariffs to those Mr Trump’s administration has imposed on steel and aluminium imports and Chinese goods.
Mr Trump said the signing, which took place on the sidelines of the United Nation’s General Assembly, was "a great day" for the US and South Korea.
He described the revised pact as a "brand new agreement" and a sign that his trade strategy was working.
"In addition to this deal, we have many in the works, and they are fair deals," he said.
