President Trump didn’t even have the guts to do the job himself. Instead, he hid in the shadows and sent his attorney general, Jeff Sessions, to do the dirty work of telling the country that the administration would no longer shield from deportation 800,000 young undocumented immigrants brought to this country as children.

Mr. Sessions, a longtime anti-immigrant hard-liner, was more than up to the task. In a short, disingenuous speech, he said a program set up by President Barack Obama in 2012 — known as DACA, for Deferred Action for Childhood Arrivals — was a lawless policy that “yielded terrible humanitarian consequences” and denied jobs to hundreds of thousands of American citizens. (Mr. Trump echoed these claims in a statement released by the White House.) Mr. Sessions called DACA “an unconstitutional exercise of authority” and said “failure to enforce the laws in the past has put our nation at risk of crime, violence and terrorism.”

False, false, false and false.

DACA recipients are not threats to public safety or national security; to the contrary, they must have a nearly spotless record to be eligible in the first place. They do not receive legal status in this country, only a two-year, renewable deferral of deportation along with a work permit and eligibility for other government benefits down the road. And they are not taking jobs from native-born Americans, whose declining levels of employment can be chalked up to other factors.

As for the policy’s legality, there’s no question that the president has the authority to set immigration-enforcement priorities. Presidents of both parties have done that for decades, and President Obama did it by focusing on people with criminal records and not on those brought to this country as children. For most of this latter group, the United States is the only home they’ve ever known. About 9 in 10 are working taxpayers, and deporting them could reduce the gross domestic product by over $400 billion over the next decade.