President Trump called on Congress to “legalize” DACA late Tuesday, just hours after his administration announced the repeal of the amnesty for children brought to the country illegally — promising that he will “revisit this issue” if Congress does not turn DACA into legislation. Attorney General Jeff Sessions announced the repeal of the Obama era executive order — known as the Deferred Action for Childhood Arrivals program — both on constitutional grounds and also on principle. “The effect of this unilateral executive amnesty, among other things, contributed to a surge of unaccompanied minors on the southern border that yielded terrible...