Why? Nefarious perhaps, but only unconstitutional because it doesn't seem to fit into one the delegated powers of the FedGuv. Power to take the Census only authorizes an "enumeration", that is a count, not collecting detailed information, like how many loos (or guns) you've got.
However they do need to know about where those people they count live, although addresses would work as well as GPS coordinates, so that Congressional districts can be reapportioned so as to get (about) the same number of people in each district.
I hate to be the one to do it, but this is “much ado about nothing.” By now, every city in the US has aerial photos of every property with geodetic coordinates on the corners of each frame.
All O has to do is get copies of the photos.
That’s what I am saying basically. All of the personal questions and GPS stuff seems unconstitutional.
Are we bound by law to answer all of the questions? What are our rights?