Under the Constitution everything done by any state organ is done in exercise of delegated sovereign power. In every instance where one delegates anything they do not lose the right or power to do themselves that which they delegated.
The greatest threat to the will of the people is government, that is the Executive and Legislature, hence the adage love your country, fear your government. It is precisely for this reason and past experiences with our elected leaders that the framers of the Constitution included mechanisms to guarantee that the will of the people would never be subverted by their representatives in the Legislature and Executive.