It suffices to look at how they behaved themselves and continue to behave themselves while trying to shove TTIP down our throats. They are nothing more than a front for corporate lobbyists to write legislation to suit themselves.
As for the EP. 1. It is composed of amateur politicians. 2. They are effectively powerless. 3. They can easily be bought.
If it is composed of amateur politicians (which is not at least in some cases, but I agree in many it has been used as a way to park out politicians that did not get a seat in a national election...) the fault is also with the EU people that always underestimated (look at the turnouts!) how important the institution was, particularly after 2009, when it got more power and control.
As for the EP. 1. It is composed of amateur politicians. 2. They are effectively powerless. 3. They can easily be bought.