where you work for a living, a new employee is subject to pre-employment drug test and physical exam, crimminal check, and credit check as well as driver record check if the new hire will operate an employer provided vehicle.
So why not do random drug testing for those on entitlements? Add to that, random, unannounced inspections of public housing to ensure the property is being maintained and there are no unauthorized inhabitants.
Same thing on those free phones. Check the call record, monthly, to ensure those phones are only being used for medical and safety emergencies.
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