Federal agents with the U.S. Immigration and Customs Enforcement's (ICE) Homeland Security Investigations (HSI) detain a man in this handout picture taken in Dallas, Texas March 30, 2014 and released ... more 
Federal agents with the U.S. Immigration and Customs Enforcement's (ICE) Homeland Security Investigations (HSI) detain a man in this handout picture taken in Dallas, Texas March 30, 2014 and released May 1, 2014. U.S. authorities have arrested 638 suspected gang members in a month-long sweep named Project Southbound aimed at associates of the fast-growing network of Surenos street gangs, an international criminal gang that started in Southern California, Immigration and Customs Enforcement said on Thursday. (REUTERS/ICE/Charles Reed) less 
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Reuters | Photo By HANDOUT / REUTERS
Thu, May 1, 2014 5:34 PM EDT