The U.S. has “not made the progress that many had hoped” at the conclusion of the seventh round of talks to renegotiate the North American Free Trade Agreement, U.S. Trade Representative Robert Lighthizer said Monday, and that time was running out to complete it this year.

“We have closed out only three additional chapters … To complete NAFTA 2.0, we will need agreement on roughly 30 chapters. So far, after seven months, we have completed just six,” he said at the conclusion of the seventh round of talks in Mexico City.