Every few years, politicians, bureaucrats and construction company bigwigs get embroiled in bid-rigging scandals — and the public's faith in government sinks deeper.

In bid-rigging, or "dango," corporations ostensibly competing for a government contract ferret out the secret ceiling bid price. With that knowledge, they conspire to decide which among them will win the bid. Members of the circle take turns winning, or being "chanpyon" (champions).

The shady practice has a long history, and while it is most pervasive in the construction industry, other sectors have been involved as well, including defense contractors. Although company profits can be reduced by illegally skirting competition, the burden on taxpayers mounts.