When each government entity has it's own clearance process, there is significant redundant use of resources that could be eliminated by centralizing the process for less sensitive positions (e.g. IT, administrative). For example, over the past few years, I've had to go through 3 clearance processes working for different branches of the government. They all wanted the same information and the work to be performed was essentially the same. That means sending multiple people out to interview the same people, checking the same background info, etc. If someone is cleared by one branch, the other branches should accept that clearance, providing it is within the 5 year period and requires the same level of clearance (e.g. Secret, Top Secret). Exceptions could be made for positions like a CIA or FBI agent.