Lox, I think you and Richard are looking at two different stages: Specifically, you are looking at how a law can be applied or interpreted and what safeguards there may be there; while Richard and GUEST lightnix are focusing on the process by which the bill can be passed or a law amended in the first place, i.e. before it reaches interpretation.

Now, while the title of the thread is general and covers the area of your concern (i.e. the former), I think the lightnix with his opening post meant it to focus on the latter, which is indeed a major constitutional issue.