Well, except for one small technicality

 If they're on this side of THe river, they're criminals

If they're on this side of THe river, they're criminals

Business Insider shouts "Half the Undocumented Immigrants [sic] rounded up in February raids have no criminal record"

Approximately half of the unauthorized immigrants targeted in a set of deportation raids in February have no criminal records or traffic offenses, according to Immigration and Customs Enforcement data obtained by The Washington Post
Of the 675 immigrants detained in the raids, 163 had been convicted of traffic violations — 90% of those cases involved drunk driving.
Meanwhile, 177 immigrants had no criminal records, though the Post notes that 66 had traffic- or immigration-related charges pending. 2 had homicide convictions, 80 were convicted of assault, and 57 had convictions for "dangerous drugs." 
Of those immigrants that were criminals, it's not clear how many were convicted of minor offenses or more serious crimes. The Trump administration has only released a detailed breakdown of criminal records for the 675 immigrants targeted in the early February raids. 

Tip for BU and the Washington Post: All of those "immigrants" are criminals - their very presence in the country constitutes a crime, 24-hours a day.