Major programs operated by the agency include: executive direction and administration, Real Property Management (Realty and Natural Resources), road maintenance, wildland fire, Human Services, probate, and transportation.

IRS Taxpayer Assistance Centers (TACs) offer personal, face-to-face help for tax issues that cannot be handled online or by phone. All TACs operate by appointment only. When calling to schedule an appointment, customer service representatives are available 7:00am - 7:00pm, Monday - Friday. Before scheduling an appointment, please visit the website for a list of services offered at your chosen location. For in-person meetings, plan to bring along a current government issued photo ID, a Taxpayer Identification Number, such as a Social Security number, and all necessary tax documents. Many of the services offered at Taxpayer Assistance Centers (TACs) are available online 24/7 and are continually updated with the latest information, useful tools, and other services to solve tax issues. Nearly every tax issue can now be resolved online or by phone from the convenience of your home or office. ​

Offers more than 200 miles of mapped and surveyed passages, guided cave tours provide opportunities for viewing this underground wilderness. *Tours are offered year-round; however, the off-season has limited tour times and facility hours. *Advanced reservations are available through recreation.gov. *For more information about guided cave tours, facility hours, surface trails and picnic areas, interested visitors should call the monument at (605) 673-8300 and speak with a park ranger.

​Interested in applying for a passport? Visit website for the most up to date information and application procedures.

The Social Security Administration distributes the nation's basic method of insuring a continuing income to a person or family when earnings stop or are reduced because of retirement, disability or death. Payments are not intended to replace all lost earnings. People should try to supplement Social Security payments with savings, pensions, investments, or other insurance. Supplemental Security Income (SSI) pays benefits/monthly checks to qualifying individuals based on financial need. To qualify you must be at least 65, blind or disabled. Low income and resource limits also apply. www.ssa.gov/ssi Social Security Disability Insurance (SSDI) pays benefits to people meeting certain medical requirements for disability payments, if you are insured, meaning that you worked long enough and paid Social Security taxes. www.ssa.gov/disability Disability Determination Services (DDSs) field office is responsible for verifying non-medical eligibility requirements, which may include age, employment, marital status, or Social Security coverage information. The field office then sends the case to a DDS for evaluation of disability. https://www.ssa.gov/disability/determination.htm The Social Security office may have a list of approved organizational payees. Expanded online services are available through the Social Security portal at www.socialsecurity.gov/myaccount. The portal can be used for replacement Social Security Number (SSN) card requests without the need to travel to the office. ​In-person assistance is also available through local offices. To find the closest location check www.ssa.gov/locator/

General medical and surgical, primary, nursing home, and rehabilitative care. Behavioral health services including addictive disorder services (ADS), compensated work therapy, Residential Post Traumatic Stress (PTSD) program, Mental health intensive case management, inpatient psychiatric services, and outpatient psychiatric services. Gun locks are available through the Suicide Prevention Coordinator.

The FBI works around the globe to combat the most dangerous criminal and security threats facing the country including National Security Priorities such as protecting the United States from terrorist attacks, foreign intelligence operations and espionage and cyber-based attacks and high-technology crimes. Other priorities are to combat public corruption at all levels, protect civil rights, combat transnational/national criminal organizations and enterprises, combat major white-collar crime and significant violent crime. Visit the website to learn how to report internet crimes or to submit a tip, report threats and crimes. If someone is imminent danger, call 911 or local police immediately.

Contact for questions or information relating to: Firearms (FFL) or Explosives (FEL) Licenses Licensee Firearms Theft or Loss Machineguns, Silencers or other NFA weapons Firearms, Ammunition and other importation issues Shipping of firearms Proper sale/purchase/transfer of firearms, ammunition or explosives Other firearms/explosives industry questions Contact Criminal Enforcement for questions or information relating to: Suspected illegal firearms possession/sales/purchase Suspected criminal activity involving explosives, tobacco, or arson Any other law enforcement matter within the jurisdiction of ATF

The tribal office serves as the center of government, services and community support for the members of the Lower Brule Sioux Tribe.

Assisting those who are interested in joining the United States Navy. Visit the website below to find a recruiter.

Assisting those who are interested in becoming either active duty Army soldiers (full-time) or Army Reserve soldiers (part-time).

To find location information, hours of operation and specific services such as passports and assistance with burial flags: Dial 1-800-ASK-USPS (800-275-8777) or visit www.usps.gov and look for 'Quick Tools' in the heading, drop down menu will provide the 'Find USPS Locations' option, select and enter City and State or Zip code. There are many retail sites (grocery stores, drug stores) which offer some USPS services, such as mailing supplies, mail drop off or stamps.

Criminal cases - Individuals do not file criminal charges in U.S. district courts. A criminal case is started by the government, usually through the U.S. attorney's office in coordination with a law enforcement agency. Civil cases - A civil action starts with the filing of a complaint. People who start civil action in a district court are required by law to pay a filing fee, unless they file also file an application claiming they can't pay the fee (also called "in forma pauperis"). U.S. Probation and Pretrial Services - Holds offenders accountable for their criminal actions, facilitates victim reparation, and requires compliance with court mandates.

The Extended Care and Rehab Service Line includes the following services: Caregiver support group, spinal cord injury / disorder program, full suite of therapies, chiropractic care, integrative health services, adaptive sports, low vision and visually impaired services, inpatient community living center, pain management, whole health services, community living center, hospice/palliative Care, polytrauma/traumatic brain injury (TBI), geriatrics & extended care (GEC), medical foster home, and home health care.

Providing information, guidance and support to those who are interested in joining the Marine Corps.

United States Senator, serving since January 2015.

Assisting those who are interested in becoming either active duty Army soldiers (full-time) or Army Reserve soldiers (part-time).

For traveling to the United States, a visa is required for tourism, visits, business, employment, study and exchange, and immigration. A foreign national traveling to the United States for tourism (a short visit for vacation, for visiting family and friends, or for medical treatment) needs a visitor visa (B-2) unless qualifying for entry under the Visa Waiver Program. To work in the United States temporarily as a lawful nonimmigrant, temporary workers must qualify for the available visa category based on the planned employment purpose. The steps in the process before applying for a visa vary. The United States supports international education and welcomes foreign students and exchange visitors. Before applying for a visa, students and exchange visitors must be accepted by their schools or program sponsors. Details on the types of Visas and application procedures are on the website.

The FBI works around the globe to combat the most dangerous criminal and security threats facing the country including National Security Priorities such as protecting the United States from terrorist attacks, foreign intelligence operations and espionage and cyber-based attacks and high-technology crimes. Other priorities are to combat public corruption at all levels, protect civil rights, combat transnational/national criminal organizations and enterprises, combat major white-collar crime and significant violent crime. Visit the website to learn how to report internet crimes or to submit a tip, report threats and crimes. If someone is imminent danger, call 911 or local police immediately.

The US Marshal office provides court security and fugitive warrants, as well as serve civil process for federal courts, transport and detain all Federal prisoners in South Dakota. District offices are located in Sioux Falls, Rapid City, Pierre, and Aberdeen.

To find location information, hours of operation and specific services such as passports and assistance with burial flags: Dial 1-800-ASK-USPS (800-275-8777) or visit www.usps.gov and look for 'Quick Tools' in the heading, drop down menu will provide the 'Find USPS Locations' option, select and enter City and State or Zip code. There are many retail sites (grocery stores, drug stores) which offer some USPS services, such as mailing supplies, mail drop off or stamps.

Assisting those who are interested in joining the United States Navy. Visit the website below to find a recruiter.

The Social Security Administration distributes the nation's basic method of insuring a continuing income to a person or family when earnings stop or are reduced because of retirement, disability or death. Payments are not intended to replace all lost earnings. People should try to supplement Social Security payments with savings, pensions, investments, or other insurance. Supplemental Security Income (SSI) pays benefits/monthly checks to qualifying individuals based on financial need. To qualify you must be at least 65, blind or disabled. Low income and resource limits also apply. www.ssa.gov/ssi Social Security Disability Insurance (SSDI) pays benefits to people meeting certain medical requirements for disability payments, if you are insured, meaning that you worked long enough and paid Social Security taxes. www.ssa.gov/disability Disability Determination Services (DDSs) field office is responsible for verifying non-medical eligibility requirements, which may include age, employment, marital status, or Social Security coverage information. The field office then sends the case to a DDS for evaluation of disability. https://www.ssa.gov/disability/determination.htm The Social Security office may have a list of approved organizational payees. Expanded online services are available through the Social Security portal at www.socialsecurity.gov/myaccount. The portal can be used for replacement Social Security Number (SSN) card requests without the need to travel to the office. ​In-person assistance is also available through local offices. To find the closest location check www.ssa.gov/locator/

Offering health care services such as primary care, laboratory and pathology, mental health care, treatment in post traumatic stress disorder (PTSD), and suicide prevention.

The Sisseton Agency provides the following services on the Lake Travers Reservation: realty services, probate, social services, and road maintenance.