One of the world's busiest migration routes will be shut down by Panama's next president

Panama is on the verge of a dramatic change to its immigration policy that could reverberate from the dense Darien jungle to the U.S. border.

José Raúl Mulino faces an uphill climb out of an economic and political slump.

In a bold move, José Luis Mulino even suggested building a barrier to curb migration through the Darién Gap, where nearly 500,000 migrants crossed last year.