Arrests of families crossing the U.S.-Mexico border illegally in the past five months hit a record, prompting the chief of Customs and Border Protection to say the system is at “the breaking point.”

From October through February, border agents arrested 136,150 people traveling in families at the southern border. Those figures exceeded the record for a full, 12-month period; 107,212 people were arrested during the federal fiscal year that ended in September.

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