In 1996 welfare legislation made lawful immigrants, with a few exemptions,
categorically ineligible for most forms of public assistance. This legislat
ion has led affected immigrants and their advocacy groups to file lawsuits
to challenge the constitutionality of the Personal Responsibility and Work
Opportunity Reconciliation Act. This article reviews recent court rulings t
hat have upheld the act and examines court decisions in light of two consti
tutional principles (the Equal Protection and Supremacy clauses), which tra
ditionally have been applied to the issue of aliens' eligibility for welfar
e benefits. The author finds inconsistent outcomes between federal and stat
e legislation in the judicial review process. To resolve this inconsistency
, the author suggests several policy changes in the distribution of welfare
benefits concerning eligibility of lawful immigrants. The implications for
social work practice are discussed.