In this subchapter, “homeless youth” means a person who is younger than 19 years of age, including a migratory child, as defined by Section 1309, Elementary and Secondary Education Act of 1965 (20 U.S.C. § 6399), who:
(1) lacks a fixed, regular, and adequate nighttime residence, including a person who is:
(A) living in an emergency shelter;
(B) abandoned in a hospital; or
(C) awaiting foster care placement;
(2) has a primary nighttime residence that is a public or private place not designed or ordinarily used as a regular sleeping accommodation for humans; or
(3) is living in a car, park, other public space, abandoned building, substandard housing, bus or train station, or similar setting.