Raison de l'existence des usines à Diplômes

'One of the main reasons that fake schools continue to exist is that it is difficult to legally define exactly what is meant by the term "diploma mill" or "degree mill." Surely any school that will send you a Ph.D. by return mail on payment of $100, no questions asked, is a fraud. But what about a school that requires a five-page dissertation before awarding the Doctorate? How about 20 pages? 50? 100? 200? Who is to say? One man's degree mill is another man's alternative university. And nobody seems to want the government stepping in to evaluate doctoral dissertations before permitting schools to grant degrees. Would you want [insert the name of your least-favorite politician] grading your thesis?
Another large gray area is the one dealing with religious schools. Because constitutional safeguards in the United States guarantee separation of church and state, most states have been reluctant to pass any laws restricting the activities of churches -- including their right to grant degrees to all who make an appropriately large donation. In many states, religious schools are not regulated but are restricted to granting religious degrees. But in some, like Louisiana and Hawaii, if you established your own one-person church yesterday, you could start your university today and award a Ph.D. in nuclear physics tomorrow.
Many states say that religious schools can only grant religious degrees. A diploma mill in Louisiana took that argument to new limits, when they announced that because God created everything, no matter what you studied, it was the study of the work of God,
and therefore a religious degree. Twice, the Louisiana courts upheld this argument!'

http://www.quackwatch.com/04ConsumerEducation/dm0.html