Ben Gittleson and M.L. Nestel, ABC News, April 30, 2018

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The Border Patrol facility at San Ysidro in San Diego won’t be processing any more people hoping to enter the U.S. “until space becomes available,” U.S. Customs and Border Protection Commissioner Kevin McAleenan said in a statement Sunday afternoon.

McAleenan added that once space opens up and “resources become available,” officers “will be able to take additional individuals into the port for processing.”

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“We’ve got blankets, we’ve got people bringing clothing and food from the community,” said [Alex] Mensing of Pueblo Sin Fronteras [advocacy group supporting the roughly 100 travelers at the border]. “The police have set up kind of a ring of fencing around it. Everyone is out here, organizing a security commission, and everything they need to be able to spend the night.”

As of 9 p.m. local time Sunday, he said, “No one has been processed at all. Nobody has set foot in the United States.”

If admitted, the migrants would be taken to a detention center elsewhere and then interviewed by an asylum officer in what is called a “credible fear interview.”

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Before it was announced that San Ysidro was at capacity, an attorney representing the caravan told ABC News that approximately 150 to 180 people would present at the official port of entry and seek asylum today.

She said most were children.

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The border at San Ysidro has for weeks been built up as a flashpoint where the caravan of emigrants hoped to make the 15-minute walk over the pedestrian bridge and gain entry into the U.S.