My thoughts: a couple of years ago two Chechen refugees decided to plant bombs at the finish line of the Boston Marathon, killing three people and injuring about 250, 16 of whom lost limbs. They later murdered a police officer.
The family had been received from a war-torn nation with open arms. Mother turned out to be a small-time crook arrested several times for shoplifting. Big brother was a petty thug who beat up women. Russian intelligence twice warned the FBI that big brother was spending his vacations in Jihad camps. Little brother a pot-addled loser. They all lived on welfare; the only member of the family who seemed to hold a job was the sister, who worked as a stripper.
Any sane refugee program would have kicked those filthy assholes out of the country a decade ago but thick-witted lawmakers and lazy bureaucrats couldn’t be bothered.