The "Where did the virus come from discussion" is looking too much like how we handle the endless debate on climate change. We should not wait for certainty about the origins of the virus to have a discussion about how we should handle these labs. If we are going to have them, and let them research "gain of function" these labs should only be in very remote areas. Travel to and from them should be restricted and staff should subject to long quarantines and extensive testing before coming back to civilization. Putting them in the middle of cities and sending their workers out into that city every night is a recipe for disaster. Since the virus has already killed many more people than a nuclear weapon would have, even if there is only a minor chance it came from one of these labs we should demand these labs be isolated.