found: Work cat.: Opinions of the heads of the executive departments, and other papers, relating to expatriation, naturalization, and change of allegiance, 1873.
found: Repatriation of certain former American citizens, 1917:p. 16 (Emigration, enlistment, and taking the soldier's oath, is effectually a change of allegiance)
found: Citizenship decision-making: durability and change of national allegiance and identification among American migrants in Australia, 1980.
found: Encarta.msn website, Oct. 27, 2006(change of allegiance; to cause a change in somebody's allegiance, or undergo a change of allegiance such as: a diplomat who turned spy)