Re: the problem with drones...
Interesting - drones with cameras might be covered under the Peeping Tom Law
(f) Any person who, for the purpose of arousing or gratifying the sexual desire of any person, secretly or surreptitiously uses or installs in a room any device that can be used to create a photographic image with the intent to capture the image of another without their consent shall be guilty of a Class I felony.
While this applies to a room, I can see a good lawyer making a legal argument extending this to the airspace of drones.
Remember that Roe v. Wade stated that the U.S. Constitution's 14th Amendment implied a right to privacy. That also comes into play here.