Investigative reporter Nick McKenzie’s 2024 exposé of the criminal infiltration of the construction sector prompted a slew of investigations among governments and law enforcement agencies around the country.

The conclusions of those investigations reveal the extent of that corruption, and its findings are damning - including that the CFMEU's conduct could have cost taxpayers $15 billion, and the Victorian government knew of the problems but did not fix the problem.

Drug trafficking and shocking sexual exploitation of women on major infrastructure sites - are some of the other claims.

Today Nick McKenzie on the serious questions the government has to answer.