Correction: 3 senior U.S. officials now dispute @NBCNews’ report, saying that the monitoring of Cohen’s phones was limited to a log of calls, known as a pen register, not a wiretap where investigators can actually listen to calls. https://t.co/Uhm1pA0u39 pic.twitter.com/Cs8VHDJC6Y— NBC News (@NBCNews) May 3, 2018