From the Utah/LDS point of view....
As the migrant caravan descended on the border this weekend, Trump announced a potential solution requiring asylum seekers to wait in Mexico while their claims move through U.S. courts. Utah Sen. Mike Lee floated a similar plan in a visit to Mexico in early November with officials in the administration of Enrique Pena Nieto, president of Mexico, and in the incoming administration of Andres Lopez Obrador, the country’s President-elect.
Lee said he met with the incoming interior minister, during his recent trip.
'We discussed several possible remedies, including a safe third country agreement and the idea of requiring asylum applicants to remain in Mexico while their applications are pending,' Lee told the Deseret News. 'Developing personal relationships and engaging in meaningful dialogue around principled policy is critical.'