Spain is at the center of the global immigration debate. Left-wing Prime Minister Pedro Sanchez has enacted a plan aimed at giving legal status to undocumented immigrants. But last month, tens of thousands of migrants tried to illegally cross into the Spanish territory of Ceuta, which borders Morocco. The incident is putting Spain’s immigration policy under the microscope. Stephanie Sy reports.Notice: Transcripts are machine and human generated and lightly edited for accuracy. They may contain errors.

William Brangham:

As most Western countries tighten their borders, Spain's left-wing Prime Minister Pedro Sanchez has enacted a plan aimed at giving legal status to undocumented immigrants. It's called regularization.But late last month, when tens of thousands of migrants tried to illegally cross into the Spanish territory of Ceuta, which borders Morocco, that incident put Spain's immigration policy under the microscope.Stephanie Sy has more.

Stephanie Sy:

Before most of Madrid wakes up, Carlos Aroca is already at work. For hours each morning, he collects garbage in one of Europe's busiest capitals. It's essential work done by an invisible worker.