Hugo Black,
Mahnomen County Minn v. United States…
“ To hold that the United States is foreclosed by action which Isabelle Garden may have taken or failed to take in ignorance of her legal rights is to hinder the United States in the performance of its considered policy of protection and to deprive her indirectly of that which she could not directly be deprived-her vested tax exemption. Without legal right the County placed her tax exemp property upon its tax rolls immediately upon her reaching adulthood, assessed it, and she paid the taxes under circumstances not fully disclosed. ”
