Schumer thinks this is new???
Given how much he blathers on aviation issues he doesn't understand, I think he heard "plane" and thought he needed to say something.
Digital Orthophoto Quarter Quads (DOQQs) have been available from the US Geologic Survey (USGS) for years. Some states/counties allow you to download them for free. Otherwise they can be readily purchased on DVD. They have more than enough resolution for a slightly trained imagery analyst to pick out and target critical infrastructure.
My county, like Anonymous Bosch's (above), also does full aerial photogrammetry sweeps every five years. This is quite common though the frequency varies by state/county/city. Such sweeps are already used to locate structures built without permits. My county is going through the process now and sending out inspectors.
I find it much more likely that Google, Apple, and other would simply license the existing photogrammetry datasets rather than refly everywhere. In certain targeted areas not already covered by LIDAR or other 3D aerial mapping, they might do selective area coverage.