Welfare reform also changed the rules for people applying for disability benefits. But Mainers who were born in Canada have always believed they are American citizens, so it's never even occurred to them that they might need a green card. That means if the government takes the position that they aren't citizens, the burden of proof is on the Canadian-born Mainers to convince them otherwise, so they can get their benefits. If they can't prove their citizenship, they have to go through the naturalization process. Legally, they'd be indistinguishable.
Cases also come up in other ways.
But she was born in Edmundston, New Brunswick, and grew up in Madawaska. They still do because the hospital now is 25 miles away from that town. Four months ago, the Internal Revenue Service contacted Drake about her 1999 income tax return. They told her she did not qualify for a particular deduction because she had filed under her married name, and her Social Security card, which she had received in 1969 with no trouble, was still in her maiden name. Drake said she never doubted her citizenship, but became frightened when she visited the INS office in Oklahoma City with proof of her parents' birth in the United States, her marriage license, divorce papers and other documents to try to straighten things out.