The Data on DACA and Crime

Hours before the Supreme Court heard oral arguments over whether the Trump administration could end a deferred deportation program for so-called “Dreamers,” the president tweeted that “some” of those receiving that protection “are very tough, hardened criminals.” But certain criminal activity, such as a felony or significant misdemeanor conviction, is grounds for denial or ejection from the program.

The application and renewal processes, which include background checks, are designed to prohibit “hardened criminals” from participating in the program.

As we’ve explained before, the Deferred Action for Childhood Arrivals program —...