I support the Government's actions in this regard and I am pleased Senator Kenneally raised the question of retrospection, which worried me. While retrospection is a flawed principle in law, I am fully in favour of it in this instance. The provisions must be tested as I understand from an excellent departmental briefing arranged by Senator O'Toole that many of the powers involved derive from a European Union instrument of 1999 rather than subsequent legislation. We must be sure there is nothing constitutionally questionable about the operation of this law.