Also, can we pass a law that if the person doing a screening colonoscopy finds "1 polyp" that turns the diagnostic into a far more profitable "treatment" they lose their medical license? And can we make that law retroactive?
No, we can't make laws retroactive, at least not in the US, and why would you want that anyway?
*edit for formatting
This would require another bowel prep, another round of anesthesia, and even more operative time, and yes, another colonoscopy charge.