What is the procedure for starting a recall action against National Senators?

Presently, there is none.

A bill was proposed in 1992, but failed to pass (wow, guess why?) As previous persons have mentioned, the best way is to support their opposition in the next election, or, run yourself.

P.S......better have a boatload of money if that's what you do. The McCain/Feingold bill made sure that an incumbent could not be defeated unless they want to be.

Wait until they're up for re-election and vote for the other guy. That's the only way to get rid of a senator, assuming you're talking about U.S. Senators.

There isn't any. Under the constitution, senators can only be removed by the senate itself.