If the security of our nation is important, this should be the policy with Brennan, Comey, Hillary, everyone who is no longer working for Uncle Sam.
The minute government workers are off the payroll, all security clearances should be revoked 100%. Why the hell do Obama holdovers and never Trumpers have ANY security rights?
Sorry but your perception is incorrect as you are confusing CLEARANCE and ACCESS. Clearance is a level, access is the information.
When your contract is up your ACCESS is deactivated. You no longer have access to the information on the project. However, you still maintain you CLEARANCE for 2 years. This is by design. Security clearances are expensive. By allowing a person to maintain their clearance, they can then be hired for another contract or position without having to redo the clearance.