President Obama will announce Tuesday that he’ll act on his own authority to expand background checks for would-be gun buyers and increase enforcement of existing laws, a culmination of his effort to curb gun violence that nonetheless falls short of sweeping change he had long sought.
Though Obama is going around Congress yet again to act on a policy priority, as he did on immigration and climate, he is limited in what he can legally do without proposing legislative change. His executive actions neither close the so-called gun-show loophole nor require universal background checks, two possibilities he had directed aides to explore amid a spate of mass shootings in the...