(1) A claim of the United States Government shall be paid first when
(A) a person indebted to the Government is insolvent and
(i) the debtor without enough property to pay all debts makes a voluntary assignment of property;
(ii) property of the debtor, if absent, is attached; or
(iii) an act of bankruptcy is committed; or
(B) the estate of a deceased debtor, in the custody of the executor or administrator, is not enough to pay all debts of the debtor.