I think this might be a bug: when I go to download a geojson -- say here: http://censusreporter.org/data/table/?table=B01003&geo_ids=04000US19&primary_geo_id=04000US19 -- it adds the US shape. It adds the Iowa shape further if I drill down to, say tracts. The problem here is that then I have to go in and delete those shapes manually once I've downloaded them. This is even after I've deleted the 'US' from the list on the left side.