Dorian gains strength, now hitting Puerto Rico as category 1 hurricane; Ahead of storm, Trump attacks Puerto Rico, calls it "One of the most corrupt places on Earth" ; Mayor of San Juan responds to Trump's attacks; Sources: Trump rattled about possible economic downturn, scrambles for victories ahead of election; Trump: Fox News "Isn't working for us anymore"; Biden dominates Dem field by double-digit in new poll; Top 2020 Democrats beta trump in new 2020 poll; Sources: Trump said he'd pardon aides if they broke law to build wall; AG Bill Barr to host private party at Trump's DC hotel; GOP Sen Isakson announces he's retiring from Congress; Boris Johnson to suspend Parliament amid Brexit brawl; Trump: Johnson is exactly what "U.K. has been looking for" via Knit