ROGERSVILLE — “Barriers work — period.” That’s what U.S. Rep. Phil Roe told a Saturday Rogersville/Hawkins County Chamber of Commerce legislative breakfast as the clock ticks down toward a Friday deadline for a conference committee to get a border security deal done or face another partial federal government shutdown. Customs and Border Protection, according to Roe, has apprehended 140,000 people trying to enter the U.S.