Since my graduation in 1968, I have heard the statements above many, many times from several different chiropractic college presidents, deans, and in particular, one national chiropractic organization. The other reason could just be greed, plain old greed. You have only to investigate differing state to state laws that require a four year pre-professional degrees before entrance to chiropractic college to know just exactly where the leadership in those states, and the national leadership which supports them, sit on those issues.
Every student wishes for open access after passing their national or state boards to any state.
My God, there are way too many chiropractors in this state. There are far too many practicing doctors of chiropractic in my town, let alone my county. All those who wanted open access before, are now supporting professional birth control in their own states. Surely not because they wish to elevate the profession to a higher standard. Nor is there a study that has been done, that I am aware of, that shows that a student with a 4.0 pre-professional education makes a far better doctor than one with a 3.0 or a 2.8.