“Transnational gangs like MS-13 have taken advantage of our porous southern border and previously lax immigration law enforcement,” Sessions said.
Immigrants are now more fearful of the law enforcement agency than the gang.
The arrests are part of a two phase crackdown called "Operation Raging Bull."
Angel Ramos, 36, is accused of stabbing a woman in his moving car several times with a flathead screwdriver in northeast Colorado last week.
Attorney General Sessions said he has authorized federal prosecutors to investigate members of the international MS-13 gang with all lawful tools.
FBI had been on a four-year manhunt in search of Gomez before he was captured in Woodbridge, Virginia.
MS-13 is among gangs categorized as the biggest threat to public safety based on relationships with Mexican cartels and high levels of violence and transnational crime.