
The laws that apply on Native American reservations in the US differ from those in the surrounding areas. Native American tribes possess tribal sovereignty, which allows them to establish their own rules and regulations, including civil and criminal matters. This means that tribal law, rather than state law, often applies on reservations. Tribal courts play a significant role in resolving disputes among tribal members and between tribal members and non-members. However, the extent of tribal jurisdiction is not absolute and can be limited by federal law in certain areas. The interaction between tribal, state, and federal laws can be complex, and it is crucial to understand the unique legal landscape faced by tribal members within the broader legal framework of the United States.
| Characteristics | Values |
|---|---|
| Nature of jurisdiction | Tribal, state, and federal jurisdictions interact in a complex manner |
| Tribal jurisdiction | Tribes have jurisdiction over their members and authority to establish rules and regulations |
| Tribal laws | Tribal laws may vary from those of the surrounding area |
| Tribal courts | Adjudicate disputes among members and between members and non-members |
| Federal law | Takes precedence over tribal and state law in certain areas, such as major crimes |
| State law | May or may not apply to tribal members, depending on the situation |
| Law enforcement | Reservations have their own law enforcement officers |
| Judicial systems | Reservations have their own judicial systems |
| Traffic regulations | May differ from those outside the reservation |
| Time zones | May differ from the surrounding state, e.g., Navajo Nation observes DST while Arizona does not |
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What You'll Learn

Tribal sovereignty
The sovereignty of Native American tribes is dependent on and subordinate to the federal government, not the states. This means that tribal members must adhere to federal law, but the extent to which they are subject to state law is less clear and depends on various factors. Tribes are sovereign over tribal members and tribal lands, and each tribe has the authority to establish its rules and regulations, including those related to civil and criminal matters. Tribal courts play a significant role in adjudicating disputes among tribal members and between tribal members and non-members.
The relationship between tribal and federal law has been clarified by several US Supreme Court cases. For example, Montoya v. United States (1901) affirmed tribal sovereignty, United States v. Wheeler (1978) upheld tribal authority to prosecute its members, and Oliphant v. Suquamish Indian Tribe (1978) limited tribal jurisdiction over non-members who commit crimes on reservations.
The federal government has a "duty to protect" the tribes, and Congress has ultimate authority over matters affecting the tribes. This includes the power to regulate commerce with Indian tribes and the power to restrict or limit the internal powers of tribal sovereignty. However, the federal government recognises the sovereignty of tribes and deals with them as governments, not special interest groups or individuals.
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Jurisdiction of tribal courts
Tribal courts are courts of general jurisdiction. There are approximately 400 Tribal justice systems throughout the United States, each with its own distinct legal framework. These courts are partially funded through Public Law 638 Tribal Priority Allocations (TPA).
Tribal sovereignty is protected throughout the Tribal justice system, and each Tribe has jurisdiction over its members, with the authority to establish its rules and regulations, including those related to civil and criminal matters. This means that, in many cases, it is Tribal law, rather than state law, that applies on reservations. Tribal courts play a significant role in adjudicating disputes among Tribal members and between Tribal members and non-members.
However, the power of Tribal jurisdiction is not absolute. A complex web of legal precedents and legislation determines the extent to which Tribal law and state law interact. In certain areas, federal law takes precedence over Tribal and state law. For example, the Major Crimes Act and the Indian Country Crimes Act are two prominent and longstanding federal statutes that delineate the allocation of jurisdiction between Tribal, state, and federal governments. The Indian Child Welfare Act (ICWA) is another example of federal legislation that impacts Tribal court jurisdiction. ICWA gives the Indian child's tribe the right to intervene in child custody proceedings and transfer such proceedings to the jurisdiction of the tribe.
Public Law 280 (PL 280) created an exception to the rule that states lack jurisdiction over the activities of Native Americans and tribes on tribal lands. Through PL 280, Congress transferred the federal government's legal authority over all criminal offenses involving Native Americans on tribal lands to specific state governments, including California. As a result, in many areas where PL 280 applies, state and tribal courts share jurisdiction.
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Federal law vs tribal law
The legal landscape of the United States is a complex tapestry of laws and jurisdictions. Native American tribes are considered sovereign nations, with the authority to govern themselves and establish their own laws and customs within their reservation borders. This nationhood status grants them inherent powers of self-government, and each tribe has its own distinct legal framework.
Federal Indian laws govern the relationship between tribes and federal and state governments, while tribal laws cover the inner workings of specific tribes. Tribal members are citizens of their tribe and the United States, and as such, they must adhere to federal laws. However, the extent to which they are subject to state laws is less clear-cut and depends on many factors. On federal Indian reservations, only federal and tribal laws apply to tribe members unless Congress determines otherwise.
Tribal courts play a significant role in adjudicating disputes among tribal members and between tribal members and non-members. They also have jurisdiction over civil and criminal matters, but their power is not absolute. Federal law takes precedence in certain areas, such as major crimes committed by or against Native Americans, actions involving interstate commerce, and any legal issues involving the United States as a party. The Major Crimes Act and the Indian Country Crimes Act are examples of longstanding federal statutes that outline the allocation of jurisdiction between tribal, state, and federal governments.
The U.S. Supreme Court has also played a role in clarifying the relationship between state and tribal law through landmark cases. For example, Montoya v. United States (1901) affirmed tribal sovereignty, United States v. Wheeler (1978) upheld tribal authority to prosecute its members, and Oliphant v. Suquamish Indian Tribe (1978) limited tribal jurisdiction over non-members committing crimes on reservations.
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State law vs tribal law
The relationship between state and tribal law in the United States is complex and nuanced. Native American tribes are considered sovereign nations, which means they have the authority to govern themselves and establish their own laws and customs within their reservation borders. This sovereignty significantly influences the interaction between tribal, state, and federal laws.
In general, tribal members are subject to federal, state, and local laws as US citizens. However, on federal Indian reservations, only federal and tribal laws apply to tribal members, unless specified otherwise by Congress. Each tribe has its own distinct legal framework, with jurisdiction over its members and authority to establish rules and regulations for civil and criminal matters. Tribal courts play a crucial role in resolving disputes among tribal members and between tribal members and non-members.
While tribal sovereignty is recognised, it is not absolute. Federal law takes precedence in certain areas, such as major crimes committed by or against Native Americans on reservations, actions involving interstate commerce, and legal issues involving the United States as a party. The Major Crimes Act and the Indian Country Crimes Act are federal statutes that delineate the allocation of jurisdiction between tribal, state, and federal governments. Additionally, landmark Supreme Court cases like Oliphant v. Suquamish Indian Tribe (1978) have limited tribal jurisdiction over non-members committing crimes on reservations.
The extent to which tribal members are subject to state laws depends on various factors and differs from state to state. For example, in Florida, state law assumes jurisdiction over criminal offenses and civil causes involving tribal members on reservations. In contrast, the Wampanoag Tribal Council of Gay Head in Massachusetts does not have jurisdiction over non-tribal members or settlement lands, where state law applies. Understanding the legal relationships and their historical context is essential to comprehending the unique challenges faced by tribal members within the broader US legal system.
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Law enforcement and judicial systems
Reservations are semi-autonomous lands with their own rules, law enforcement officers, and judicial systems. Native American tribes possess limited tribal sovereignty, allowing them to exercise self-governance, pass laws, regulate power and energy, create treaties, and hold tribal court hearings. Tribal courts play a crucial role in resolving disputes among tribal members and between tribal members and non-members. Most tribes now maintain tribal court systems and facilities to detain tribal members convicted of specific offences within the reservation's boundaries.
Tribal sovereignty significantly influences the interplay between tribal, state, and federal laws. Each tribe has its own distinct legal framework, with jurisdiction over its members and the authority to establish rules and regulations for civil and criminal matters. However, tribal jurisdiction is not absolute, and its interaction with state law is intricate and subject to legal precedents and legislation. For instance, in matters of major crimes involving Native Americans, federal jurisdiction takes precedence, as outlined in the Major Crimes Act and the Indian Country Crimes Act.
In terms of law enforcement, the tribal council generally has jurisdiction over the reservation, but it is still subject to federal law. Court jurisdiction in Indian country is shared between tribes and the federal government, depending on the specific tribal affiliation, crime, or civil matter at hand. The extent of tribal jurisdiction can be influenced by factors such as landownership and the presence of non-Indian residents within the reservation.
While the laws within tribal lands may differ from those of the surrounding states, the laws themselves are not easily accessible to non-tribal members. There is no consolidated resource for tribal laws, and understanding the legal landscape requires navigating a complex web of tribal, state, and federal interactions. As a result, non-tribal members driving through reservations are advised to exercise caution and avoid any potentially illegal actions.
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Frequently asked questions
The relationship between Tribal and federal law is complex. Tribal members must adhere to federal law, but the extent to which they are subject to state law is less clear. Tribal law applies on reservations, but federal law takes precedence in certain areas.
Tribal law and state law interact in a complex web of legal precedents and legislation. Tribal courts have jurisdiction over disputes between Tribal members, and between Tribal members and non-members. However, in cases involving major crimes committed by two non-Indians, state or federal jurisdiction applies.
Tribal lands are semi-autonomous, with their own law enforcement officers and judicial systems. However, local governments may exert some limited law-and-order authority, which diminishes tribal sovereignty.
There are over 570 federally recognised tribes across the United States, each with its own distinct legal framework. While there is no consolidated resource for Tribal laws, the National Indian Law Library's Tribal Law Gateway provides links to legal resources organised by tribe and material type.













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