AT&T and Time Warner executives this week appeared before a subcommittee of the Senate Judiciary Committee to respond to lawmakers’ concerns about their $84 billion merger. Their testimony came at a time of high public skepticism of institutional power. Rival content and mobile providers applied further pressure with questions about the impact the deal would have on competition and pricing. AT&T’s acquisition of Time Warner would serve to disrupt existing models of traditional cable provider dominance, AT&T CEO Randall Stephenson said.