immediate family
(1) the term “immediate family” means— (A) with respect to subsection (a)(1) of this section, the spouse of a former President during a former President’s lifetime, the surviving spouse of a former President until the surviving spouse’s death or remarriage, and minor children of a former President until they reach sixteen years of age; and (B) with respect to subsection (a)(2) and (a)(3) of this section, a person to whom the President, President-elect, Vice President, Vice President-elect, or major candidate for the office of President or Vice President— (i) is related by blood, marriage, or adoption; or (ii) stands in loco parentis;