The State of California appeals the grant of a preliminary injunction to Brenda Roe, Anna Doe, and a certified class of all others similarly situated, who brought an equal protection claim under 42 U.S.C. § 1983 to prevent California from implementing Welfare and Institutions Code § 11450.03. That statute limits benefits to new residents in California for their first year of residency to the amount that they received under the Aid to Families with Dependent Children (AFDC) program in their state of prior residence. We affirm.
I.
We review on appeal the grant of a preliminary injunction. We have repeatedly instructed that
*1402 to obtain a preliminary injunction, the moving party must show either (1) a combination of probable success on the merits and the possibility of irreparable injury or (2) that serious questions are raised and the balance of hardships tips in its favor. These two formulations represent two points on a sliding scale in which the required degree of irreparable harm increases as the probability of success decreases.
United States v. Nutri-cology, Inc.,
Thus, we review only the district court’s consideration of the likelihood of success on the merits at one end of the scale, and the possibility of irreparable harm at the other end of the scale. We do not decide the merits. See L.A. Mem’l Coliseum Comm’n v. National Football League,
A.
While neither party suggests that the district court applied the wrong preliminary injunction standard, California argues on appeal that the district court misapprehended the law with respect to the underlying issues of equal protection and the fundamental right to travel. As a result, California argues that the district court erred in its determination of plaintiffs’ probability of success on the merits.
1.
Section 11450.03 of the California Welfare and Institutions Code, enacted in 1992, provides that “families that have resided in this state for less than 12 months” and who qualify for welfare shall receive benefits no greater than the “maximum aid payment that would have been received by that family from the state of prior residence.”
California first sought to implement this durational residency requirement in 1992, pursuant to the grant of relevant waivers by the Secretary of Health and Human Services. However, the district court judge, the same judge that presided in the instant case, granted a preliminary injunction at that time against implementation of § 11450.03 after determining that the distinction among California residents based on the duration of their residency was unconstitutional. The district court relied on a line of Supreme Court cases addressing durational residency provisions in a variety of contexts. See Green v. Anderson,
Brenda Roe and Anna Doe, different plaintiffs than those in Green v. Anderson, commenced the instant action on April 1, 1997, each having recently moved to California seeking employment and being eligible for assistance. They argued that, due to the higher cost of living in California, the relatively lower level of assistance established by § 11450.03 threatened them with imminent deprivation of the basic necessities of life. That same day, the district court entered a temporary restraining order enjoining implementation of § 11450.03, pending a hearing on plaintiffs’ request for a preliminary injunction, and granting plaintiffs’ motion to proceed under fictitious names. On April 23, 1997, on the stipulation of the parties, the district court permitted the instant action to be maintained as a class action.
Finding that the plaintiffs demonstrated the possibility of irreparable harm and that California would not be unduly harmed, the district court on June 4, 1997, granted the preliminary injunction, citing its prior reasoning in Green v. Anderson regarding the probability of success on the merits. Roe v. Anderson,
In granting the preliminary injunction in the instant case, the district court adopted by reference its prior discussion in Green v. Anderson of the Supreme Court’s eases regarding the right of migration and equal protection, in which the Court set aside as unconstitutional distinctions drawn among residents of a state-all of whom are bona fide residents-based on the incipiency or duration of their residency.
California challenges the district court’s reliance on its earlier decision in Green. Although the decision in Green was summarily affirmed by this court, see
However, our prior affirmance of the district court’s decision in Green remains viable as persuasive authority, notwithstanding the Supreme Court’s vacatur. See In re Taffi,
3.
In finding that Roe and Doe had demonstrated a probability of success on the merits, the district court determined that the apparent purpose of § 11450.03 was to deter migration of poor people to California. The district court noted in Green that California’s “two-tier system” for AFDC benefits implicates the constitutional right to freedom of travel or migration,
We are thus satisfied, based upon the persuasive authority of our prior affirmance in Green v. Anderson and the apparent purpose of § 11450.03, that the district court did not err in its determination that Roe and Doe demonstrated a probability of success on the merits.
B.
“Numerous cases have held that reductions in AFDC benefits, even reductions of a relatively small magnitude, impose irreparable harm on recipient families.” Beno v. Shalala,
Nevertheless, California argues that, because the AFDC grant for new California residents "remains the same as it was in their state of prior residence ... they suffer no harm cognizable by this Court." As such, California suggests that the proper comparison is between the "position of newcomers before and after travel to California," rather than between "recent arrivals" and "longer-term California residents."
However, as noted by the district court, in case after case the Supreme Court has determined that the appropriate comparison is between the treatment of recent residents of California and other residents of California and not a comparison of recent residents of California to residents of other states. See Attorney General of New York v. Soto-Lopez,
II.
Balancing the probability of success on the merits with the possibility of irreparable harm, we hold that the district court did not abuse its discretion in granting the preliminary injunction. Our prior affirmance in Green remains persuasive as to the probabifity of success on the merits, and as to the possibility that irreparable harm falls on the class Roe and Doe represent, but not on California.
An appeal from the grant or denial of a permanent, rather than preliminary, injunction would entitle the parties to a full review on the merits. We reject California's invitation to engage in such a review of this case in its current posture, before the district court has had a chance to address the underlying merits upon a fully developed record.
AFFIRMED.
Notes
. A district court's order regarding preliminary injunctive relief is subject only to "limited review.” The grant or denial of a preliminary injunction will be reversed “only where the district court abused its discretion or based its decision on an erroneous legal standard or on clearly erroneous findings of fact." Does 1-5 v. Chandler,
Although we have previously suggested that issues of law underlying the district court’s decision on the preliminary injunction are reviewed de novo, Metro Publishing, Ltd. v. San Jose Mercury News,
This single-tier formulation of the abuse of discretion standard of review has been subsequently adopted in numerous other contexts. See, e.g., Koon v. United States,
. Section 11450.03 states in full:
(a) Notwithstanding the maximum aid payments specified in paragraph (1) of subdivision (a) of Section 11450, families that have resided in this state for less than 12 months shall be paid an amount calculated in accordance with paragraph (1) of subdivision (a) of Section 11450, not to exceed the maximum aid payment that would have been received by that family from the state of prior residence.
(b) This section shall not become operative until the date of approval by the United States Secretary of Health and Human Services necessary to implement the provisions of this section so as to ensure the continued compliance of the state plan for the following:
*1403 (1) Title IV of the federal Social Security Act (Subchapter 4 (commencing with Section 601) of Chapter 7 of Title 42 of the United States Code).
(2) Title IX of the federal Social Security Act (Subchapter 19 (commencing with Section 1396) of Chapter 7 of Title 42 of the United States Code), (added by Stats.1992, c. 722 (S.B.485), § 37.5, eff. Sept. 15, 1992).
. The Supreme Court, after granting certiorari, vacated as unripe the district court’s decision (summarily affirmed by this court) granting the preliminary injunction against implementation of § 11450.03 due to intervening litigation that struck the necessary grant of waivers from the Secretary of Health and Human Services. See Beno v. Shalala,
In February 1996, the Secretary again granted waivers for most of California’s welfare program, but expressly withheld the waiver that would have permitted California to implement the residency requirement. Nevertheless, in August 1996, Congress enacted a new federal welfare law, the Personal Responsibility and Work Opportunity Reconciliation Act of 1996 ("PRWORA"), 42 U.S.C. §§ 601, et seq., that specifically authorized the states to apply a dura-tional residency requirement of the type found in § 11450.03 to those who have "resided in the State for less than twelve months” without additional waivers. The PRWORA superceded the AFDC program with a new program entitled Temporary Assistance to Need Families ("TANF”) that significantly increased the states’ discretion to design their federally supported welfare plans without seeking waivers from the Secretary. See 42 U.S.C. § 604(c).
In October 1996, California submitted its welfare plan to the Department of Health and Human Services, including a durational residency limitation consistent with § 604(c). On February 28, 1997, in All-County Letter 97-11, the California Department of Social Services instructed the counties to implement § 11450.03 as of April 1, 1997.
. The district court certified the class of plaintiffs defined as "all present and future AFDC and TANF applicants and recipients who have applied or will apply for AFDC or TANF benefits on or after April 1, 1997, and who will be denied full benefits because they have not resided in California for twelve consecutive months immediately preceding their application for aid.”
. While acknowledging that "the right to travel is not protected by explicit provision in the Constitution,” the district court noted that "the Supreme Court repeatedly has held that such a right inheres in the concept of a union.”
