Basher, you are whining.
There are a variety of valid reasons why the U.S. does not automatically grant a licence to foreign trained dentists. While some countries have great programs, some don't. In some countries, a student can get into school because they come from a priveledged family. Some students can get all the way through school without learning anything because the instructors are afraid of the connections that their students have. In some countries, if you failed out of school, you can simply buy forged documents. Because of these reasons, the U.S. has to have a method where they can make sure that they are not letting a bad dentist into the population. If they didn't they would be legally liable for damages if someone was harmed because of their poor policies. These damages could be in the millions in the right mixture of situations.
I got an interview this year, but did not get in. I have been trying for only a few years, and have taken classes at night in English and Anatomy when I could to help my chances. I am not blaming anyone that I didn't get in. Of course I would like to go, and aso I will try again, maybe try to improve my scores, maybe try to make myself more competitive. I know, and the schools know, that the scores aren't a judge of a true dentist, but they only have so many spots. If you think it is unfair that there are so few spots, try doing a little reading. As foreign trained programs grow, overall programs are actually decreasing in number. That means that less and less U.S. students are going to dental school. It's not all about you, it's the nature of the system.
The most ridiculous thing is that you claim things are unfair because you asked a few people what was required to get in and it didn't seem to match reality. I got to tell you, if that is the maximum level of your ability to research a subject, you probably aren't qualified for any school that likes its students to have done research. Second, once you found out that you had to compete, it sounds like your solution is just to cite unfairness at every level to the ADA, the schools, the U.S., etc. Everyone is to blame but you.
Yet you claim to be a leader... Those are not the qualities of a leader.
You seem to have a misperception of the working of the country as a whole. I could be wrong, but the style of your writing indicates to me that you expect things from people just because you are you. Maybe you grew up priveledged, and never really had to really truly sacrifice to get those things that you wanted or needed in life. Of course if you did, you might deny it, since playing a victim seems to be a central argument in your posts. I can tell you that I, like a lot of people on this board most likely, had many days when I didn't have food growing up. I've seen people get handed education opportunities that I worked for my whole life just because they were from a certain group, or had family connections. Sometimes, this is just how life is. It's unfortunate, but true - even in the states (UCLA ortho). However, there are times I worked like crazy, and got what I wanted. As far as U.S. schools go, I've never held the U.S. in contempt. It really is a good place to live overall, and except for a few countries, is probably one of the fairest places in the world to live when it comes to employment or education. Your rights here are not universal though...
Yes, maybe the system could work differently, and poen special schools that were accredited that would only take foreign trained dentists, but there are a few problems with this. Other schools are already closing because they are too costly to operate. Few dentists want to teach when they can make a better salary working. Plus the ADA also is of the opinion that the number of dentists is ok. ( The NY times recently disagreed, and I agree with the times on this issue)
Also, you CAN go get licensed without going to school. minnesota allows it. Do some research and go get a license there. However, you might not be able to get a great job or a prosperous outside of your home nation community because insurance companies might think you are a risk if you haven't studied here. There is a lot to know about insurance practices, ethics, standards of care and responsibility that are different from your home country.
I think the high standards that the US has makes their reputation as dentists tops through the world. In my country, we thought the US dentists were great, though bought German equiptment and medicine when we could.
Finally, I really think your English would need to improve to do well in school or in a dentists office that treats English speaking patients.
I'm sorry because I know this comes off as rough, but its just how it is.