This took place after a national effort to find and remove illegal immigrants with prior criminal convictions some with multiple criminal convictions. US immigration and customs enforcement better known as ICE conducted a nationwide sweep that lasted seven days which detained immigrants with felony convictions such as: manslaughter attempted murder, kidnapping, armed robbery, drug trafficking, child abuse, sexual crimes and aggravated assault. ICE named this operation crosscheck and said it was the largest of its kind involved over 1900 officers and agents from the 24 field offices with police organizations offering assistance.
19 arrests occurred in Boston, many of those arrested were already considered immigration fugitives in that they had been previously ordered removed from the country but failed to leave, some had been previously deported and had reentered illegally.
Some of those arrested were presented to both local and federal authorities for criminal prosecution at least 146 of those arrested were being considered for prosecution on a variety of charges including illegal reentry after deportation a federal charge which can carry up to 20 years in prison.