In a memo, the Department of Justice says the move will "strengthen" the death penalty and deter crime.
Related stories
Live: Iran's President says US ‘must choose’ whether to end war
From Nagaland to a path to the Oscars: Indian film brings a rarely seen world to global cinema
Saudi reports fresh Houthi attacks as France pledges to defend key oil port
Susan Sarandon and Hannah Einbinder arrested at anti-Netanyahu protest in New York
Hundreds of thousands expected in Paris for Pope's visit
Theranos founder Elizabeth Holmes reportedly to be transferred to halfway home next year