Biden, Trudeau, and Obrador give joint statements in Mexico City

STORY: "The top of our shared agenda today is keeping North America the most competitive, prosperous and resilient economic region of the world," Biden said. He also thanked Obrador for efforts on stemming the flow of migration into the United States.

The U.S. president was also asked about classified documents found in a think-tank office he once used. Biden told reporters that he takes classified documents seriously. He said he did not know what was in the documents.

"We are cooperating fully with the review, which I hope will be finished soon," said Biden.