| Ex. MT-085 | County COVID-19 emergency declaration of March 13, 2020 (rescinded July 2021) and county public health rules (masks; gathering limits) tightened January 2021 and no longer enforced after HB 257 (May 2021)Lewis and Clark County COVID-19 emergency declaration and public health rules | Lewis and Clark County Commissioners; Lewis and Clark City-County Board of Health and Health Officer | Lewis and Clark County (Helena), MontanaCounty | Mar. 13, 2020 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Emergency declarationGathering capFace-covering requirement | Confirmed from a secondary source | |
| Ex. DUT-MT-005 | Mont. Code Ann. 50-2-118Powers and duties of local health officers | Montana Legislature (Montana Code Annotated, Title 50, ch. 2) | MontanaState | Sept. 28, 2026 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Standing dutyBusiness closureGathering capEvents and venuesQuarantine and isolationStanding duty | Primary source read | |
| Ex. DUT-MT-029 | Mont. Code Ann. 50-2-116 (Powers and duties of local boards of health) (cross-reference to Ex. MT-073)Powers and duties of local boards of health, including the 2021 limits of subsection (5) and the enforcement saving clause of subsection (7) | Montana Legislature (Mont. Code Ann. 50-2-116, as amended by Ch. 324 and Ch. 408, L. 2021 (HB 121, approved Apr. 16, 2021; HB 257, approved May 7, 2021)) | MontanaState | Apr. 16, 2021 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Standing dutyBusiness closureQuarantine and isolationStanding dutyOperating condition | Primary source read | |
| Ex. MT-041 | Supervisory Memorandum and Order Rescinding Proclamation (branch closure Proclamations of Mar. 13, 2020 and Jan. 15, 2021)Supervisory Memorandum to Montana State-Chartered Banks and Credit Unions: Proclamation Rescinded; Order Rescinding Proclamation | Montana Division of Banking and Financial Institutions, Commissioner Melanie G. Hall | MontanaSector regulator | July 12, 2021 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Emergency declarationOther | Primary source read | |
| Ex. DUT-MT-001 | Mont. Code Ann. 50-1-202General powers and duties (Department of Public Health and Human Services) | Montana Legislature (Montana Code Annotated, Title 50, ch. 1) | MontanaState | Sept. 28, 2026 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Standing dutyBusiness closureQuarantine and isolationStanding duty | Primary source read | |
| Ex. DUT-MT-002 | Mont. Code Ann. 50-1-203Public health inspections | Montana Legislature (Montana Code Annotated, Title 50, ch. 1) | MontanaState | Sept. 28, 2026 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Standing dutyBusiness closureStanding dutyOperating condition | Primary source read | |
| Ex. DUT-MT-008 | Mont. Code Ann. 10-3-104General authority of governor | Montana Legislature (Montana Code Annotated, Title 10, ch. 3) | MontanaState | Sept. 28, 2026 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Standing dutyEmergency declarationStay-at-homeBusiness closureTravel and quarantineStanding duty | Primary source read | |
| Ex. DUT-MT-009 | Mont. Code Ann. 10-3-103Definitions ('disaster' includes 'outbreak of disease'; 'emergency') | Montana Legislature (Montana Code Annotated, Title 10, ch. 3) | MontanaState | Sept. 28, 2026 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Standing dutyEmergency declarationStanding duty | Primary source read | |