Never depend on someone else for something vital, unless you have direct personal experience that the person in question is dependable. Never trust a politician to do anything that does not, in some way, directly benefit him or her. A politician can always be relied upon to find new and inventive ways to spend other people's money. There is no such thing as an iron-clad guarantee or an unbreakable contract. Conversely, there is no such thing as a foolproof escape clause.
Power is immensely attractive to the governmental mindset.
Any even moderately effective government, unless vigilantly and constantly controlled and held in check, will quietly accumulate power until it is brought down by rebellion, collapses under its own bureaucratic weight and inefficiency, or evolves into a totalitarian state. It is not strictly true to say that power, in and of itself, corrupts. However, power is immensely attractive to the easily corruptible. Everything is a mixture of order and chaos. If you look at the universe on the very large scale, everything looks orderly.