The client (UAE) discovered it, the builder (France) put the tech into the satellite. I don't think anyone is really thinking the USA put these systems in behind their backs. France was in on this the whole time and they were hoping UAE's engineers would not be completely thorough in analysing their designs.
These are older satellites and it sounds like the cameras could move slightly independently so that they may be able to compensate for the entire satellite being off a little bit.
EDIT:
Have a read of: http://www.space.com/12996-secret-spy-satellites-declassifie...
These are older satellites and it sounds like the cameras could move slightly independently so that they may be able to compensate for the entire satellite being off a little bit.