How, exactly, do we do that?
There are multiple court rulings that declare that a Senator cannot be recalled, fired, or otherwise punished.
Moreover, with laws like ObamaCare setting precedent of excluding themselves from the law they are codifying an actual class-system WRT citizenship. Congressmen are of a higher class than we, illegal immigrants (due to how many laws they flout with wink-and-nod from the authorities) are also a higher class than we, Law Enforcement with their many immunities
for prosecution are a higher class than we, Bureaucrats with their non-accountability (e.g. Lois Learner) are also a higher class than we.
So, how do you propose that we, the lowest class, hold the highest class's feet to the fire?
I propose that anything that would be at all effective would get the LEOs and/or Bureaucrats sicced on you.
Loudly and publicly. Take a page from the Occupy handbook and harass them as necessary; it may take that just to get their attention. Invade their offices (non violently). Don't give them a minute's rest. And like the RATs' GOTV efforts, remind them that "We know where you live"!