The District of Columbia permits only its residents and some
debtors who work in the District to use its exemptions. “The
following property of the head of a family or householder
residing in the District of Columbia, or of a person who earns
the major portion of his livelihood in the District of Columbia,
being the head of a family or householder, regardless of his
place of residence, is free and exempt . . ..” D.C. Code § 15-
501(a).