What Does The Fifth Principle Of The Preamble In The US Constitution Talk About?

The Preamble in the United States Constitution adumbrates six specific principles, all of which encapsulate the objectives that are to be fulfilled by the Constitution of the United States.  As for the fifth principle, it revolves around the pragmatic notion of checks and balances.  This notion talks about the constant check that each of the three bodies of power enlisted in the United States Constitution (the legislative body, the executive body and the judiciary body) would have over each other.  

Not only would this constant inspection ensure a smooth flow of functioning for all three branches but it would also preclude any sort of deceitful practices on behalf of any branch.  In other words, the fifth principle of the Preamble of the United States Constitution leaves no scope for any sort of deceit or abuse of power to take place.  It gives an absolute assurance of the correct formulation, execution and interpretation of laws of the nation.