Maine tribal sovereignty operates under rules that apply nowhere else in the country. The Penobscot Indian Nation, the Passamaquoddy Tribe, the Houlton Band of Maliseet Indians, and the Mi’kmaq Nation are all federally recognized, yet a 1980 settlement subjected them to Maine state law for most purposes and cut them off from the direct federal-tribal relationship that other Indigenous nations rely on. The result is a legal category of one: four tribes with recognition but with far less governing authority than the more than 570 other federally recognized tribes.
The 1980 Settlement and What the Tribes Gave Up
In the late 1970s, the Passamaquoddy Tribe, the Penobscot Nation, and the Maliseet Tribe asserted claims to roughly two-thirds of Maine’s land, arguing that earlier transfers violated the Trade and Intercourse Act of 1790.1Congress.gov. Maine Indian Claims Settlement Act of 1980 The First Circuit Court of Appeals confirmed that the tribes “still possess inherent sovereignty to the same extent as other tribes in the United States” and were “entitled to protection under federal Indian common law doctrines.”2Maine State Legislature. Task Force to Amend the Maine Act to Implement the Indian Land Claims Settlement – Issue Paper
Rather than litigate to conclusion, the parties negotiated. Congress passed the Maine Indian Claims Settlement Act (MICSA) in 1980, and the state enacted its companion statute, the Maine Implementing Act, which MICSA ratified as part of the deal.1Congress.gov. Maine Indian Claims Settlement Act of 1980 The tribes received $81.5 million for land purchases and trust funds.3National Library of Medicine. Maine Indians Settle Land Claims Against US In exchange, they dropped their land claims, and the settlement acts declared that Indian nations, tribes, and bands in Maine “are and shall be subject to all laws of the State of Maine.”
Under state law, the tribes function much like municipalities for most governing purposes. That is the trade at the heart of every dispute that has followed: financial compensation in place of the territorial and jurisdictional authority that other tribes retain.
The Mi’kmaq Nation, formerly known as the Aroostook Band of Micmacs, was not part of the 1980 settlement. It gained federal recognition through a separate act signed on November 26, 1991, though it operates within the same broader state-law framework that shapes tribal life in Maine.4Mi’kmaq Nation. About Us
The Federal Law Exclusion
The provision that does the most damage to Maine tribal sovereignty is Section 1735(b) of the Settlement Act. It says that any federal law enacted after October 10, 1980 “for the benefit of Indians, Indian nations, or tribes or bands of Indians” does not apply in Maine “unless such provision of such subsequently enacted Federal law is specifically made applicable within the State of Maine.”5Justia Law. 25 USC 1735 – Construction
The default is reversed. When Congress passes a law benefiting tribes nationwide, Maine’s tribes are automatically excluded unless Congress writes them in by name. Everywhere else, a generally applicable federal statute reaches everyone until an exception is carved out; in Maine, the tribes have to be carved in.
The practical effects have been significant:
- The Indian Gaming Regulatory Act, which allows tribes across the country to operate casinos, did not automatically extend to Maine.
- The Indian Healthcare Improvement Act and federal disaster response laws were similarly blocked.
- The Violence Against Women Act’s tribal court provisions, which the Penobscot Nation was initially selected to pilot for the U.S. Department of Justice, were challenged by Maine’s then-attorney general. Congress eventually wrote Maine’s tribes into VAWA’s reauthorization by name, but only after years of advocacy.
Wabanaki leaders have called the arrangement fundamentally unjust. Every beneficial federal law requires a separate lobbying campaign just to reach four tribes that Congress has already recognized.
What State Control Looks Like on the Ground
Taxes on Tribal Land
Under the Maine Implementing Act, the Passamaquoddy Tribe, the Penobscot Nation, and the Houlton Band of Maliseet Indians must make payments in lieu of taxes on real and personal property within their territories “in an amount equal to that which would otherwise be imposed” by the state or local taxing authority.6Maine State Legislature. Maine Code Title 30 – 6208 Taxation Tribal governments pay the equivalent of local property taxes on their own land.
An exemption exists for property used “predominantly for governmental purposes,” mirroring the exemption Maine municipalities enjoy for government buildings and similar property.6Maine State Legislature. Maine Code Title 30 – 6208 Taxation Property owned by tribal members or held in trust outside of designated Indian territory is taxed the same as anyone else’s. Municipalities where Houlton Band trust land sits can negotiate separate payment-in-lieu agreements, so the burden varies by geography.
In other states, trust land is typically exempt from state and local property taxes altogether. Maine’s tribes carry a cost their counterparts elsewhere do not, and it limits the resources available for housing, services, and economic development inside their communities.
Environmental Regulation and the Penobscot River
The state has consistently asserted regulatory jurisdiction over all waters within its boundaries, including those running through tribal lands. A 2007 First Circuit decision in Maine v. Johnson confirmed that the Settlement Acts gave Maine environmental regulatory authority over waters within tribal territory.7U.S. Environmental Protection Agency. Amended Complaint – State of Maine v EPA
That has hit the Penobscot Nation especially hard. Its members have fished the Penobscot River for sustenance since long before European contact. In 2014, the Nation adopted its own water quality standards, including a “sustenance fishing” designation requiring water clean enough for tribal members to safely eat the fish they catch.8Penobscot Nation. Water Quality Standards
A separate dispute reached federal court. The Penobscot Nation argued that its reservation includes not just the islands in the main stem of the Penobscot River but the river itself. In a 2021 en banc decision, the First Circuit held that the reservation “does not include the waters and submerged lands constituting the riverbed of the Main Stem” and encompasses only the islands.9National Indian Law Library. Penobscot Nation v Frey The state controls the water surrounding the Nation’s own reservation islands, a result that is difficult to square with any meaningful notion of territorial sovereignty.
Tribal Representation in the Legislature
Maine has a longer history of Indigenous legislative representation than any other state. Penobscot representatives have been sent to the Legislature since 1823, Passamaquoddy representatives since 1842, and the Houlton Band of Maliseet Indians gained a seat in 2012.10Maine State Legislature. A Brief History of Indian Legislative Representatives in the Maine Legislature In January 2025, the Legislature formally renamed these positions “Wabanaki Tribal Representatives.”
These representatives can sponsor legislation on Indian and land claims matters, offer floor amendments to that legislation, cosponsor any other bill, and sit with joint standing committees during deliberations. Their positions on committee reports must be noted and included in the record.10Maine State Legislature. A Brief History of Indian Legislative Representatives in the Maine Legislature They cannot vote. A Maine Attorney General opinion concluded that extending full voting rights to tribal representatives would violate both the U.S. and Maine constitutions.
The seats give the Wabanaki nations a presence in Augusta, but on the bills that matter most to tribal communities the representatives who know those communities best can speak and cannot vote.
Reform: What Has Failed and What Has Passed
A bipartisan task force issued 22 recommendations in January 2020 covering criminal prosecution on tribal lands, natural resources, gaming, taxation, and land acquisition.11Maine Legislature. An Act Implementing the Recommendations of the Task Force on Changes to the Maine Indian Claims Settlement Implementing Act LD 1626 in the 130th Legislature aimed to enact those recommendations and move Maine’s tribes closer to the jurisdictional powers other tribes exercise nationwide. The bill passed the Maine House but never reached a final Senate vote. Governor Mills signaled a veto, supporters lacked the votes to override, and the bill died.
LD 2004 took a narrower approach: flip the default in Section 1735(b) so that federal laws would automatically apply to the four Wabanaki nations unless explicitly excluded. Governor Mills vetoed it, calling the bill “vague and poorly worded” and predicting “more conflict, more litigation” with “unintended consequences” that would be “pretty much irreversible.” In July 2023, the Maine House voted 84-to-57 to sustain the veto, falling roughly a dozen votes short of the two-thirds needed for an override.
The first significant expansion of tribal authority since 1980 arrived through a different door. On January 11, 2026, LD 1164 became law, authorizing Maine’s tribal governments to operate online gambling to support economic development in tribal communities. Governor Mills allowed the bill to become law without her signature. It authorizes internet gaming, including card games, dice games, roulette, and baccarat through approved mobile applications or digital platforms. Operators must remit 18% of adjusted gross receipts to the state. Chief Clarissa Sabattis of the Houlton Band of Maliseet Indians framed the law as a way to displace illegal “black-market websites” with a regulated market that keeps revenue in Maine.12Office of Governor Janet T. Mills. Governor Mills Announces Bill to Create Economic Opportunities for the Wabanaki Nations to Become Law
As of February 2026, the Mills administration and Wabanaki tribal leaders were actively negotiating over two more bills. One would change the Section 1735(b) blocking provision. The other aims for a broader rewrite of the Settlement Act by implementing the task force recommendations that LD 1626 carried and that have sat unfinished since 2020. Any proposal must clear the Legislature before adjournment in mid-April 2026. The Governor’s office has shifted from opposition to negotiation, which is a real change, though the history of Maine tribal sovereignty reform is full of promising moments that stalled.