FILE PHOTO: U.S. Deputy Attorney General Rod Rosenstein stands for the pledge of allegiance at a summit about combating human trafficking at the Department of Justice in Washington, U.S., February 2, 2018. REUTERS/Aaron P. Bernstein

WASHINGTON (Reuters) - Rod Rosenstein, the U.S. deputy attorney general, will make a law enforcement announcement at 1:15 p.m. (1815 GMT), the Justice Department said on Friday.