SRL for [become]: Plans that give advertisers discounts for maintaining or increasing ad spending have [become] permanent fixtures at the news weeklies and underscore the fierce competition between Newsweek , TimeWarner Inc. 's Time magazine , and Mortimer B. Zuckerman 's U.S. News & World Report .
ARG-1: Plans that give advertisers discounts for maintaining or increasing ad spending | ARG-2: permanent fixtures at the news weeklies