Solicitor's Opinions

To access each document, click the link in the Opinion's NUMBER column.


Date Number Subject/Description
1993-present M-Opinion Index  
9/1/2017 M-37048 Withdrawal of Solicitor’s Opinion M-37025 issued on November 4, 2011, and Partial Withdrawal of Solicitor’s Opinion M-36964 issued on January 5, 1989
7/7/2017 M-37047

Withdrawal of M-37038, "Tribal Treaty and Environmental Statutory Implications of the Dakota Access Pipeline"

6/30/2017 M-37046

Withdrawal of M-37039, "The Bureau of Land Management's Authority to Address Impacts of its Land Use Authorizations Through Mitigation"

1/18/2017 M-37045

Reaffirmation of the United States' Unique Trust Relationship with Indian Tribes and Related Indian Law Principles

1/18/2017 M-37044

Opinion Regarding the Status of Mineral Ownership Underlying the Missouri River within the Boundaries of the Fort Berthold Reservation (North Dakota)

1/13/2017 M-37043

Authority to Acquire Land into Trust in Alaska

1/12/2017 M-37042

Suspended and temporarily withdrawn on February 6, 2017
Authority of the U.S. Fish and Wildlife Service to Manage Non-Federal Oil and Gas Activities Underlying National Wildlife Refuges

1/10/2017 M-37041

Suspended and temporarily withdrawn on February 6, 2017
Incidental Take Prohibited Under the Migratory Bird Treaty Act

12/22/2016 M-37040

Reconsideration of the Lumbee Act of 1956

12/21/2016 M-37039

Suspended and temporarily withdrawn on February 6, 2017
The Bureau of Land Management's Authority to Address Impacts of its Land Use Authorizations through Mitigation

12/4/2016 M-37038

Suspended and temporarily withdrawn on February 6, 2017
Tribal Treaty and Environmental Statutory Implications of the Dakota Access Pipeline

6/8/2016 M-37037 Implementation of the Indian Child Welfare Act by Legislative Rule
3/8/2016 M-37036 Twin Metals Minnesota Application to Renew Preference Right Leases (MNES-01352 and MNES-01353)
2/18/2016 M-37035 Partial Withdrawal of Solicitor's Opinion M-36974, Inspector General's Report on Land Acquisitions
1/15/2016 M-37034 Boundary of the Skokomish Reservation along the Skokomish River
1/15/2016 M-37033 Opinion Regarding the Status of the Bed of the Clearwater River within the 1863 Treaty Boundaries of the Nez Perce Reservation (Idaho)
11/20/2015 M-37032 Opinion on the Boundaries of the Mille Lacs Reservation
5/1/2015 M-37031 Legal Status of the Red Lake Band of Chippewa Indians' Restored Lands Assessed for Drainage Works by the State of Minnesota Under the Authority of the Volstead Act of 1908
12/23/2014 M-37030 Trinity River Division Authorization's 50,000 Acre-Foot Proviso and the 1959 Contract between the Bureau of Reclamation and Humboldt County
3/12/2014 M-37029 The Meaning of "Under Federal Jurisdiction" for Purposes of the Indian Reorganization Act
6/21/2013 M-37028 Applicability of the New Mexico Bureau of Land Management's Riparian Policy to Lands within the Boundaries of the Santa Clara Pueblo Grant
6/7/2013 M-37027 Boundary Dispute: Pueblo of Santa Ana Petition for Correction of the Survey of the South Boundary of the Pueblo of San Felipe Grant
8/10/2012 M-37026 Applicability of the Indian Land Consolidation Act's Lien Provisions to the Cobell Settlement
11/04/2011 M-37025

Suspended and temporarily withdrawn on June 30, 2017
Partial Withdrawal of M-36964 - "Proposed Installation of MCI Fiber Optic Communications Line Within Southern Pacific Transportation Co.'s Railroad Right-of Way"

05/04/2011 M-37024 Withdrawal of M-37013 - The Meaning of "In Danger of Extinction Throughout All or a Significant Portion of its Range."
01/18/2009 M-37023 Applicability of 25 U.S.C. § 2719 to Restricted Fee Lands
01/16/2009 M-37022 Protest and Administrative Appeal of Biological Assessments – Livestock Grazing
01/16/2009 M-37021 The Meaning of “Foreseeable Future” in Section 3(20) of the Endangered Species Act
01/16/2009 M-37020 The Bureau of Land Management’s Authority To Issue Prospecting Permits for Energy Minerals on Bankhead-Jones Farm Tenant Act Lands
01/15/2009 M-37019 Revival of Offshore Oil and Gas Leases
12/12/2008 M-37018 U.S. Fish and Wildlife Service Authority under Section 4(c)(l) of the Endangered Species Act to Revise Lists of Endangered and Threatened Species to " Reflect Recent Determinations "
10/03/2008 M-37017 Guidance on the Applicability of the Endangered Species Act's Consultation Requirements to Proposed Actions Involving the Emissions of Greenhouse Gases
10/03/2008 M-37016 The Secretary's Authority to Exclude Areas from a Critical Habitat Designation under Section 4(b)(2) of the Endangered Species Act
05/23/2008 M-37015 Legal Implications Affecting the Importation of Sport-hunted Polar Bears from Canada Resulting from the Listing of the Polar Bear as a Threatened Species under the Endangered Species Act
12/17/2007 M-37014 Funding to States and Indian Tribes Under the Surface Mining Control and Reclamation Act of 1977, as Amended by the Tax Relief and Health Care Act of 2006
02/23/2007 M-37013 The Meaning of "In Danger of Extinction Throughout Allor a Significant Portion of its Range"
11/14/2005 M-37012 Legal Requirements for Determining Mining Claim Validity before Approving a Mining Plan of Operation
11/14/2005 M-37011 Rescission of 2001 Ancillary Use Opinion
10/07/2003 M-37010 Mill Site Location and Patenting under the 1872 Mining Law
05/13/2003 M-37008 Authority for the Bureau of Land Management to Consider Requests for Retiring Grazing Permits and Leases on Public Lands
10/23/2001 M-37007 Surface Management Provisions for Hardrock Mining
01/18/2001 M-37006 Great Sand Dunes National Park
01/19/2001 M-37005 Whether Public Lands Withdrawn by Executive Orders 6910 and 6964 or Established as Grazing Districts are "Reservations within the Meaning of Section 4(e) of the Federal Power Act”
01/18/2001 M-37004 Use of Mining Claims for Purposes Ancillary to Mineral Extraction
01/18/2001 M-37003 Binding Nature of Solicitor's M-Opinions on the Office of Hearings and Appeals
01/19/2001 M-37002 Eastern Boundary of the Sandia Pueblo Grant
01/11/2001 M-37001 Proposed New Mexico Standards and Guidelines for Grazing Administration; Evaluation and Recommendations
12/05/2000 M-37000 Boundary Dispute Between Santa Ana Pueblo and San Felipe Pueblo: The Secretary’s Authority to Correct Erroneous Surveys, Revisiting Part IV of Solicitor’s Opinion on ‘Pueblo of Sandia Boundary’ 96 I.D. 331 (1998)
12/27/1999 M-36999 Regulation of Hardrock Mining
06/09/1999 M-36998 Disposal of Mineral Materials from Unpatented Mining Claims
05/22/1998 M-36995 Proposed Gaming on the Hatch Tract in Lane County, Oregon, for the Confederated Tribes of Coos, Lower Umpqua and Siuslaw Indians
05/22/1998 M-36994 Patenting of Mining Claims and Mill Sites in Wilderness Areas
04/16/1998 M-36993 Options Regarding Applications for Hardrock Mineral Prospecting Permits on Acquired Lands Near a Unit of the National Park System
11/19/1997 M-36992 Section 3406(b)(2) of the Central Valley Project Improvement Act
09/19/1997 M-36991 Whether lands taken in trust for Pokagon Band of Potawatomi Indians should be considered “restored” lands under Indian Gaming Regulatory Act (IGRA)
11/12/1997 M-36990 Entitlement to a Mineral Patent Under the Mining Law of 1872
11/12/1997 M-36989 Managing Areas Eligible for Protection Under the Wild & Scenic Rivers Act
11/07/1997 M-36988 Limitations on Patenting Millsites Under the Mining Law of 1872
12/05/1996 M-36987 BLM’s Authority to Recover Costs of Mineral Document Processing
12/05/1996 M-36986 Control of Surface Coal Mining Operations Under the Surface Mining Control and Reclamation Act
08/16/1996 M-36985 Whether the Circle of Nations Wahpeton Indian School Campus Constitutes Indian Country
03/22/1996 M-36984 Excess Reserves Under the Mining Law
02/12/1996 M-36983 What are Significant Revisions in the Five-Year Outer Continental Shelf (OCS) Oil and Gas Leasing Program
03/30/1995 M-36982 Entitlement to Water Under the Southern Arizona Water Rights Settlement Act (SAWRSA)
11/29/1994 M-36981 Implementation of the Oil Pollution Act of 1990 by the Minerals Management Service
05/02/1994 M-36980 Secretary’s Authority for Creating the National Biological Survey
10/04/1993 M-36979 Fishing Rights of the Yorok and Hoopa Valley Tribes
01/11/1993 M-36975 Governmental Jurisdiction of Alaska Native Villages Over Land and Nonmembers