ATLANTA — Atlanta’s airport — the world’s busiest — and Los Angeles officials want to force Uber drivers to get fingerprint-based background checks to pick up passengers, but the ride-hailing service is balking. The debate over the safety of Uber and other app-based ride-booking services intensified last month, when police say an Uber driver went on a shooting spree in Michigan that led to six deaths. The Atlanta City Council transportation committee will debate March 30 whether to require the background checks that airport officials have been calling for before allowing ride-booking services there. Such a requirement “gives everybody confidence in the system,” Miguel Southwell, general manager of the Hartsfield-Jackson Atlanta International Airport, told The Atlanta Journal-Constitution.