A new arrangement between the Trump administration and Mexico's recently elected government will force asylum seekers to remain in Mexico while U.S. courts process their claims, two Trump administration officials said, adding that it won’t go into effect for at least a few weeks.

A spokesperson for recently elected Mexican President Andrés Manuel López denied any such agreement and insisted talks of such a deal were premature. The plan would change the current system that allows asylum seekers to stay in U.S. while the courts process their claims. Before the latest swell of migrants at the border, the average wait time for an immigration hearing was over two years.