Amid speculation about the contents of Mexico's deal to curb migration in order to avert President Donald Trump's threat of tariffs, Foreign Minister Marcelo Ebrard said he had rebuffed the US demand for such a measure, but agreed to revisit the matter in 45 days.

"In the meeting with the vice president of the United States, they were insistent on the safe third country issue. We told them -- I think it was the most important achievement of the negotiations -- 'let's set a time period to see if what Mexico is proposing will work, and if not, we'll sit down and see what additional measures'" are needed, Ebrard told a press conference.