Not private doesn't mean public. Can google guarantee this data is not used to fuel their ad or other businesses in anyway ? Can they guarantee US Law Enforce

Not private doesn't mean public. Can google guarantee this data is not used to fuel their ad or other businesses in anyway ? Can they guarantee US Law Enforcement Agencies(LEA) will not have access without due process and informing you ? Can they guarantee LEAs from other countries will not given access to this data ?