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Sonosky, Chambers, Sachse, Endreson & Perry, LLP was established in 1976 with a single purpose – to represent Indian tribes. And that is what we continue to do today – we represent tribes across the country in litigation, lobbying, economic development, health care, self-determination and self-government, transportation, tribal government, and more. Read more . . . 


                                               News and Announcements

PRESS RELEASE

VANESSA BOYD WILLARD,

U.S. DEPARTMENT OF JUSTICE, TRIBAL RESOURCES SECTION,

HAS JOINED SONOSKY CHAMBERS LAW FIRM

 Washington, D.C. (June 2, 2025)

The law firm of Sonosky, Chambers, Sachse, Endreson & Perry, LLP is pleased to announce that Vanessa Boyd Willard (Cherokee Nation of Oklahoma) has joined the firm.  Ms. Willard is an experienced litigator with over 20 years of trial experience representing the United States as Trustee to Indian tribes.  Ms. Willard has extensive experience in complex litigation on behalf of Indian tribes.  She led litigation teams, including legal and technical experts, to develop tribal water rights claims on behalf of numerous tribes including, but not limited to, the Hopi Tribe, Nez Perce Tribe, Kalispel Tribe, and Coeur d’Alene Tribe.  She has also served on various federal water settlement negotiation teams throughout her career.  She was also responsible for managing litigation issues related to treaty fishing rights in the ongoing case, United States v. Washington.

On Vanessa’s recent move to the firm, Sonosky Founding Partner Reid Chambers said, “Vanessa is a seasoned litigator who has worked alongside many attorneys in our firm––myself included––for decades.  She brings the highest caliber work product and a skillful understanding of federal and state courts.  We are very proud to have her as a part of our team.”  On joining the firm Vanessa stated, “I am proud of my work at the Department of Justice.  My decision to go to private practice after spending most of my career to date in government service was fueled by the opportunity to join Sonosky.  I am excited for this next chapter and the opportunity to work directly with Indian tribes.”

The firm is based in Washington, D.C., with additional offices in Alaska (Anchorage and Juneau), San Diego, Albuquerque, and Portland.  Founded in 1976, the firm has a long and successful history representing tribes and tribal organizations in litigation, on governmental relations, and in economic development matters, and it has an active Indian water rights practice. The firm’s work involves a broad range of issues affecting tribes, including tribal sovereignty, self-governance, treaty rights, health care, environmental law, child welfare matters, land acquisition, gaming, transportation and infrastructure development, and appellate and Supreme Court practice.

Ms. Willard graduated from the University of Wisconsin at Madison in 1994 and the University of Texas at Austin School of Law in 1998.  She is a member of the Bar of the State of Colorado.

For more information, feel free to contact the Albuquerque office of Sonosky Chambers at 505-247-0147.
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Sonosky, Chambers is accepting applications for 2026 summer law clerk positions in our Washington, D.C., Anchorage, and San Diego offices.  We are a national law firm dedicated to providing the highest quality legal representation and effective advocacy for Alaska Native and American Indian Tribes.  We handle an extremely wide range of matters for our clients, including trial and appellate litigation in federal, tribal and state courts; Indian Self-Determination and Education Assistance Act litigation and advocacy; Tribal government matters; and issues involving transportation, infrastructure, environmental and natural resources, and economic development matters.  We represent Tribal interests before Congress, state legislatures, and federal and state agencies.  Summer law clerks can expect to work closely with our experienced attorneys on challenging matters.

Applications from Alaska Native and American Indian students are encouraged.  Applicants should have successfully completed their 2L year by summer 2026.  We look for candidates with a demonstrated interest in Native American matters who have excellent legal analysis, reasoning, and writing ability, collaborative interpersonal and communication skills, enthusiasm for effective advocacy, and who are able to work effectively both independently and as a team member.  Anticipated salary is $2,500 per week (paid bi-monthly) plus travel expenses.

Please send the following via email by August 30, 2025, to Whitney A. Leonard, whitney@sonosky.net, with a copy to Sarah Buzard, sarah@sonosky.net:

  1. Letter of interest;
  2. Resume, with contact information for current academic and professional references;
  3. Current law school transcript; and
  4. One recent writing sample.

 Applications will be considered on a rolling basis.  Please see www.sonosky.com for further information about the firm and our attorneys.

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On June 6, 2024, the Supreme Court issued a historic decision in Becerra v. San Carlos Apache Tribe concluding that the Indian Health Service practice of not reimbursing contract support costs incurred in operating tribal health care programs funded with Medicare, Medicaid, private insurance and other program income violated the Indian Self-Determination Act and contracts and compacts awarded under that Act.  IHS estimates the immediate impact could be an additional $800 million to $2 billion in annual payments to Tribes, although the precise amount is unknown. The Court’s decision is available here: https://www.supremecourt.gov/opinions/23pdf/23-250_2dp3.pdf

Our firm is honored to have represented the San Carlos Apache Tribe in this historic litigation. Lloyd Miller argued the case on the Tribe’s behalf, and critical members of the team included Becca Patterson, Whitney Leonard and Chloe Cotton, together with our colleagues at the Sidley Austin firm. (Adam Unikowsky from Jenner & Block argued on behalf of the Northern Arapaho Tribe.)

Lloyd Miller and Becca Patterson first successfully litigated this issue in 2015-2016 in Navajo Health Foundation—Sage Memorial Hospital, Inc. v Burwell, 263 F.Supp.3d 1083 (D. NM 2016).  (The government filed, then abandoned, an appeal in that case.)  But in 2021, the D.C. Circuit rejected a similar tribal claim in Swinomish Indian Community v. Becerra, 993 F.3d 917 (D.C. Cir. 2021).

In 2022, in San Carlos Apache Tribe v. Becerra, 53 F.4th 1236 (2022), the Ninth Circuit agreed with the outcome in Navajo Health Foundation, as did the Tenth Circuit in 2023 in Northern Arapaho Tribe v. Becerra, 61 F.4th 810 (2023). The Supreme Court granted the government’s certiorari petitions in both cases due to the conflict among the three Circuits.

Writing for the Court, Chief Justice Roberts reasoned that “Because a self-determination contract requires a tribe to spend program income to further the programs transferred to it in the contract, these provisions require IHS to pay contract support costs when a tribe does so[.]”

The Court relied on section 5325(m)(1) of the Act, which is a part of every contract and which provides that “[t]he program income earned by a tribal organization in the course of carrying out a self-determination contract—(1) shall be used by the tribal organization to further the general purposes of the contract … .”  Since section 5325(a)(2) links IHS’s duty to reimburse contract support costs to “activities which must be carried out by a tribal organization as a contractor to ensure compliance with the terms of the contract,” the Court reasoned that 5325(m)(1)’s program income spending mandate requires IHS to reimburse contract support costs attributable to spending program income. 

The Court also ruled that section 5325(a)(3) supports the Tribes because that section links contract support cost reimbursements to the operation of the “Federal program” covered by the contract, and the “Federal program” that Tribes take over from IHS is a program that is funded both with annual appropriations and with program income earned from Medicare, Medicaid and other sources.

In a concluding section, Chief Justice Roberts explains that “Aside from being inconsistent with the statute’s text, IHS’s failure to cover contract support costs for healthcare funded by program income inflicts a penalty on tribes for opting in favor of greater self-determination. Congress designed the statute to avoid such a counterproductive result.”

In the wake of the Court’s decision, Tribes across the country can be expected both to seek additional reimbursements for the annual cost of operating their self-determination contracts and self-governance compacts, and to file additional claims for back damages. Contract damages are generally paid through the Treasury Department’s Judgment Fund, and not by the contracting agency.

                       




Lloyd Miller

The Indian Law Section is pleased to announce that the 2024 Lawrence R. Baca Lifetime Achievement Award Recipient is Lloyd Miller.

Lloyd Miller is a partner with Sonosky, Chambers, Sachse, Miller & Monkman LLP, and has devoted his 45-year career exclusively to advocating for American Indian and Alaska Native rights. Lloyd is best known for his long-fought victories in two Supreme Court cases, Cherokee Nation v. Leavitt [2005] and Salazar v. Ramah Navajo Chapter [2012]. These two victories and follow on litigations resulted in Tribes recovering an estimated $2 billion in damages against the United States, and also led to the creation of two indefinite appropriations accounts permitting the Indian Health Service and the Bureau of Indian Affairs to fund in full tribal contracts and compacts awarded under the Indian Self-Determination Act. These and related litigations (including the San Carlos case currently pending before the Supreme Court) built on extensive congressional work that Lloyd did in pressing for the enactment of amendments to the Indian Self-Determination Act in the 1980s and 1990s, as well as a series of later congressional oversight hearings examining agency practices under that Act. Read more...