This will show you why Obama refuses the vault BC.
http://4.bp.blogspot.com/_R-l1iejogZw/SQLJZbuSVXI/AAAAAAAABKM/9B2p--yZzDw/s1600-h/Obama+COLB.jpg
7.C..county and state or foreign born.
Yes, 7C asks the place of the Mother’s Residence.
And as far as I can tell, mom’s residence has nothing to do with her child’s citizenship status.