Given that everyone in your opinion is rotten, what is the solution, the route to possible restoration of freedom?
The problem: "Politicians are corrupt." The need: "We must have a political system which does not involve corrupt people." There are several solutions.
The easiest one is to use a phone book for selection of Representatives and Senators. Just like it's done with jurors. Mandatory service. Keep their names secret. Limit their term to 3 months. (Nobody can be corrupted that fast, I hope.) The reason here is that randomly selected people will do better than a collection of smart people who intentionally drive the country into the ground.
As that is not easy to implement, another solution would involve fitting every elected official with a bomb in a nice, ornate collar that cannot be removed. (I'm stealing this from Stanisław Lem.) Every town will have portraits of officials, with a button under each one. If voters press the button under some portrait too many times, the collar explodes, and the state needs another election.
Is it possible to maintain a representative democracy with the way the representatives are elected today? I don't think so. The crowd is too easy to buy. Not necessarily with money, though that also works. One can buy the voters with widespread advertising; with promises; with looks; with hope (well, maybe not anymore.) The crowd is not necessarily a good elector. Perhaps hundreds of years ago, when not every citizen could vote, the voters were a bit more educated and a bit more demanding. However nowadays the voters are simply emos that are driven in the desired direction by professional herders. Unless that is changed, the voters will always be electing the most corrupt candidates because good guys finish last.
Oh, by the way - this problem is present on the same scale in all democracies. Japan, even though we think it is one of better educated countries, repeatedly elects people who, how should I say, are not the best. Hollande today is not exactly the most beloved leader of France. Every government on this planet is corrupt. So the problem is not necessarily in the basic law of the country, but simply in the people who choose to interpret that law however they want today. In most cases they are democratically elected. In this aspect, is democracy viable? Communism was also looking great... in 1848. Now we laugh at it because we know why it cannot work.
I like some of Greysard's solutions.
Mine is dreadfully simple: ONE TERM.
No career politicians at all.
You may never be re-elected to any post, even dog catcher.
The concept of committees existing where my representative has less leverage than yours, simply because yours has been there longer is garbage.
These turds need flushing every 4-6 years.
Power is TOO corrupting for even the purest to abstain from abusing it.
After a generation of this, MAYBE we could talk about revisiting the Constitution.
Maybe.