Checklist for installing proper electrical outlet outside the house
As a related by separate issue regarding the camera USB power. If it were me, I would not put the USB power adapter on the outside of the house under the in-use cover like that (even if you found one with room under the cover). My reasoning is because if the camera is for security, all someone needs to do is unplug the USB adapter and it is dead! 

The USB wires themselves are "low voltage", meaning most of the wiring rules don't apply. So what I did on mine was to put the USB power adapter INSIDE of the garage plugged into an existing outlet, then just drill a hole in the wall for the USB cable to pass through to the camera base with nothing exposed and visible. You can seal around the wire with some simple silicone sealant.