Definitely Propofol here in CT has to be administered by an anesthesiologist (and in NY). I have never seen it administered by a nurse or other doctor in either State. Usually they have a staff anesthesiologist at hospitals, or large endoscopy centers, or bigger doctor's offices, who are available to do it.
Canada is different than the USA on a lot of things, like what a prescription is required for. There are lots of medicines that are prescription only in the USA that are over the counter in Canada. One time I was in Montreal and I was really sick. I went to a pharmacy called Jean Coutu or something like that and was able to get a cough medicine which had codeine or something in it, which I did have to fill out some special papers for, but did not need a prescription. That would not have happened in the USA.
I did have propofol a few times, always by an anesthesiologist. I have no problems with it other than the obscene expense of it at retail to the patient. The benefit of Propofol is you are out cold and when you come to you are 100% and not groggy like you are with conscious sedation. It's because of that swift recovery that they can kick your ass out quickly, and then bring in the next person for their scope. Using propofol probably results in 25% more patients seen and procedures performed every day, meaning many more profits. They are all about moving the bodies in and out.