I'll try to resume some data in this message.

Vitamin D supplementation was found in years-long, randomized interventional trials, to slash cancer incidence - by, for example, 77%. ( http://www.ajcn.org/content/85/6/1586.short , http://jnci.oxfordjournals.org/content/98/7/451.short ) Even mechanisms of action are known ( http://www.sciencedirect.com/science/article/pii/S0960076010001822 , http://onlinelibrary.wiley.com/doi/10.1002/ijc.24762/full , http://www.ncbi.nlm.nih.gov/pubmed/20936945 ), althought not all are fully understood.

Vitamin D RDA was 200 IU, which is a joke, almost the same thing as nothing. Specially if we consider the human body will produce 10.000 IU in a 15-minute tropical noon-day sun full-body exposure ( http://0101.nccdn.net/1_5/3a0/1e8/00e/Cannell-Vitamin-D-study.pdf
The FDA was faced with this new Vitamin D pleiotropic effects, and given that the RDA was old and obviusly innadequate, it asked the IOM (Institute of Medicine) to review it.

They dismissed a Vitamin-D -cancer connection in a completely biased, and non-scientific report, cherry picked some articles, ignored many articles. It shocked the vitamin-D research community, as this link is more than clear. ( http://onlinelibrary.wiley.com/doi/10.1002/jbmr.328/full , http://brn.sagepub.com/content/13/2/117 ). The committee had conflicts of interest, and deliberately suppressed the favourable studies ( http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8225367 , http://www.prnewswire.com/news-releases/today-the-food-and-nutrition-board-has-failed-millions-111112159.html)

It's interesting to note that people in the committee were hand-picked to have conclicts of interest and are developing vitamin D analogs (that work the same way, but are patenteable), so their best interest is to keep natural vitamin D the lowest level possible. Like Glenville Jones, from Cytachroma, developing CTAP101, a medicine to treat vitamin D insuficiency.

Or Hector F. DeLuca, that has 101 patents of vitamin D analogs. Or J. Christopher Gallagher, working for GlaxoSmithKline, that develops Sirilux, a vitamin D analog to treat psoryasis. There are other to cite, but you got the point.

It won't fly, as antibodies are cheap and not complicated to do. Seriously, do you really believe Big Pharma is going to let it happen ? A treatment simple like this would jeopardize their business, risking billions of dollar. They'll do something to stop this treatment in its tracks. They always do. Sound paranoid ? I wish. It's more like realistic. Their purpose is not really to cure cancer, but getting a maximum profit from it.

Replace "laws" for basic primitive desires, like hunger or desire to sex. Forbid everyone from feeling these desires. Taboo the most primitive desire of all, one that every adult feels, and... presto. Religion is there. Not much different at all.

Now I can play lagless counter-strike with my mates in Japan who use fiber.