Colombia is currently dealing with a massive wave of refugees coming from Venezuela. A severe economic crisis under current President Nicolás Maduro is causing them to flee; inflation rates are high and there isn’t enough food available for people in Venezuela to eat.

Thousands of Venezuelans are crossing the Simón Bolívar International Bridge in Cúcuta, a Venezuelan border town, every day. And Colombia doesn’t seem to be turning anyone away.

This is the latest episode of Borders, a series from Vox’s Johnny Harris in which he travels the globe to listen to the people living on the front lines of international relations. Harris looks at why Colombia doesn’t deny entry to these refugees, the shared history between the two nations, and the potential limit of Colombia’s acceptance of incoming Venezuelans.

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