White House Chief of Staff William Daley says he doesn’t know if U.S. Congress will approve South Korea-U.S. free trade agreement before the August recess.

U.S. media reported on Tuesday that Daley said U.S. President Barack Obama plans to present the trade deals with South Korea, Panama and Colombia to Congress soon, adding that the White House is making active and related efforts.

Some media outlets consider Daley’s comments reserved compared to remarks he made last week during the sixth U.S.-Korea Business Council annual gala dinner in Washington.

At the time, Daley said the U.S. government could wait no longer and the Obama administration would submit bills on the ratification of trade deals.