I suspect they’ve had Bernie’s number since his old Trotskyite days in Chicago 1964...
“When Sanders was mayor, Burlington formed an alliance with another city in the Soviet Union. When Sanders traveled to Yaroslavl, 160 miles north-east of Moscow, in 1988, the trip doubled as a honeymoon with his new wife, Jane. Not much survived in terms of paperwork from that trip, although the mayoral archives do contain a tape recording of Sanders interviewing Yaroslavls mayor on a boat somewhere on the Volga river.”