Morning News Brief -—Questions are raised about whether the U.S.-Mexico tariff deal is really new. Mexico commits to hardening its border with Guatemala. And, Hong Kong protesters target China extradition bill.

AP News in Brief at 12:04 a.m. EDT. OJ Simpson on Twitter: ‘I got a little gettin’ even to do’ LOS ANGELES (AP) — O.J. Simpson launched a Twitter account with a video post in which the former football star said he’s got a “little