Republicans on the House Judiciary Committee held a field hearing Friday to get local perspectives on what they have dubbed the “Biden-Harris border crisis in San Diego” — just as the party’s vice presidential nominee, Sen. JD Vance, toured the U.S.-Mexico border near San Ysidro. Vance was joined at the border by county Supervisor Jim Desmond and Border Patrol agents before attending a scheduled fundraiser in Rancho Santa Fe. “Our Border Patrol …