I think you probably mean Physician's assistants and Nurse Practitioners. RN's running clinics would be a horrible social experiment. You can get a RN degree from stevens henager college. Not exactly the model of consistency when it comes to education.
Obamacare, the ACA, actually favors nurse practitioners and PA's opening their own practices. I know in Utah, that Nurse practitioners can have their own practice, and I do not think that PA's can at this point. Where I live in Idaho, my family's primary care doctor is a PA, and he has his own practice. He said that the ACA is VERY attractive to PAs and Nurse Practitioners, because they will have so much more job security. All states are moving towards primary care being in the hands of Nurse Practitioners and PA's, with MD's moving out of primary care, and specializing. I think this is the way it should be. We will save a lot of money on our personal healthcare this way.