How do we hold the The Congressional Ethics Committee accountable?

Question

What do we do when there was a member of the Congressional Ethics committee, who committed a very questionable land deal involving a relative who helped rezone the land so it can be sold at a more higher profit and said congressman supposedly did not even own the land himself yet made hundreds of thousands from it. The Congressional Committee consists of 3 democrats and 3 republicans.

Answer 1

You vote them all out of office