The Immigration boss said officers and men of the service should intensify surveillance in view of the planned protest by some groups. The Federal Government has tightened security at all the nation’s borders ahead of the planned nationwide protests scheduled for Aug. 1.Kemi Nandap, Comptroller General, Nigeria Immigration Service, (NIS) said this in a statement issued by the Service Public Relations Officer (SPRO) Kenneth Udo on Saturday in Abuja. Nandap directed all Zonal Heads, State Command Comptrollers and Divisional Immigration Officers (DIOS) of the Service across the country to be extr…