down. >> reporter: and new york city, setting up random quarantine checkpoints, stopping cars at key entry sites including here on staten island. even warning travelers at penn station. >> it has to become clear that this is serious business and it comes with consequences. >> reporter: travelers entering new york from 34 states plus puerto rico must quarantine for 14 days. and new york city officials say they've already stopped 50 cars with 100% compliance, but violators may face some big fines. we're talking about up to $10,000, tom. >> $10,000.all right, gio, than that. now, to the race for 2020. joe biden facing backlash for appearing to suggest most african-americans are uniform in their views. president trump seizing on that comment, turning it into a new attack. the biden campaign responding late today. here's abc's mary bruce. >> reporter: it was a chance for joe biden to further his ties with the black and hispanic communities. but in a discussion over immigration, the former vice president seemed to suggest the black community lacks diversity of thought. >> what you all know but most people don't know, unlike the african-american community with notable exceptions, the latino community is an incredibly diverse community with erent th.