Missouri · Current officeholder
Mike Costlow
Republican Missouri House, District 108
Record last updated:
Sponsored legislation
81 bills in the current data (50 as primary sponsor), sorted by most recent official action. Linked by Open States person ID.
| Bill | Title | Role | Stage | Last action |
|---|---|---|---|---|
| HJR 113 | Proposes a constitutional amendment granting homestead and personal property tax exemptions to certain veterans proportional to the veteran's disability rating | Primary sponsor | In committee | May 15, 2026 |
| HB 3481 | Modifies Supreme Court Rule 33.01 relating to conditions of release from custody in criminal proceedings | Primary sponsor | In committee | May 15, 2026 |
| HB 3315 | Establishes provisions regulating the display of flags at public buildings | Primary sponsor | In committee | May 15, 2026 |
| HB 3214 | Creates the Manufacturing Opportunity Zones Act for large manufacturing developments with access to transportation and proximity to electricity, gas, and water | Primary sponsor | In committee | May 15, 2026 |
| HB 3126 | Allows election authorities to publish electronic voting records on the election authority's website | Primary sponsor | In committee | May 15, 2026 |
| HB 3110 | Provides that the court shall not order a parent to pay child support to the other parent for reasonable or necessary expenses of the child if the parents are awarded equal time with the child | Primary sponsor | In committee | May 15, 2026 |
| HB 3100 | Establishes the offense of impeding, threatening, or harassing a first responder | Primary sponsor | In committee | May 15, 2026 |
| HB 3096 | Modifies provisions relating to workers' compensation for certain first responders, establishing a rebuttable presumption for cancer and other certain occupational diseases contracted by firefighters and fire investigators | Co-sponsor | In committee | May 15, 2026 |
| HB 2858 | Places restrictions on political subdivisions and homeowners' associations with respect to prohibitions against ownership or pasturing of non-nuisance domesticated animals for consumption | Primary sponsor | In committee | May 15, 2026 |
| HB 2857 | Enacts provisions governing United States founding documents displayed in public schools | Primary sponsor | In committee | May 15, 2026 |
| HB 2661 | Establishes programs for funding energy infrastructure projects. | Primary sponsor | In committee | May 15, 2026 |
| HB 2660 | Modifies provisions relating to additional protections to bear arms | Primary sponsor | In committee | May 15, 2026 |
| HB 2659 | Establishes the "Missouri Statewide Mechanical Contractors Licensing Act" | Primary sponsor | In committee | May 15, 2026 |
| HB 2657 | Modifies certain provisions relating to the renewable energy | Primary sponsor | In committee | May 15, 2026 |
| HB 2561 | Modifies provisions governing income exempt from earnings tax | Primary sponsor | In committee | May 15, 2026 |
| HB 2406 | Creates new provisions for the adoption of administrative rules | Co-sponsor | In committee | May 15, 2026 |
| HB 2338 | Establishes provisions relating to child support obligations for unborn children | Co-sponsor | In committee | May 15, 2026 |
| HB 2042 | Provides that the court shall not order a parent to pay child support to the other parent for reasonable or necessary expenses of the child if the parents are awarded equal time with the child | Co-sponsor | In committee | May 15, 2026 |
| HB 1729 | Establishes the "Defend the Guard Act" | Primary sponsor | In committee | May 15, 2026 |
| HB 1727 | Modifies provisions relating to unlawful discriminatory practices | Primary sponsor | In committee | May 15, 2026 |
| HB 1726 | Requires every school district to comply with enhanced safety and security standards | Primary sponsor | In committee | May 15, 2026 |
| HB 1725 | Modifies provisions relating to transportation network companies and establishes the offense of impersonating a transportation network company driver | Primary sponsor | In committee | May 15, 2026 |
| HB 1724 | Exempts certain salvage title applicants from examination requirements | Primary sponsor | In committee | May 15, 2026 |
| HB 1723 | Modifies the age of consent | Primary sponsor | In committee | May 15, 2026 |
| HB 1670 | Modifies provisions relating to income tax on tips | Co-sponsor | In committee | May 15, 2026 |
| HB 3105 | Modifies provisions regarding the rights of firearms owners | Co-sponsor | In committee | May 14, 2026 |
| HB 2388 | Creates the "Clear Skies Act" prohibiting geoengineering, cloud seeding and other atmospheric interventions, and authorizing DNR to investigate violations, and includes penalty provisions | Co-sponsor | In committee | May 12, 2026 |
| HJR 153 | Proposes a constitutional amendment changing various provisions relating to judges | Co-sponsor | In committee | May 4, 2026 |
| HB 1730 | Modifies provisions relating to firearm suppressors | Primary sponsor | Passed one chamber | May 4, 2026 |
| HCR 29 | Urges the United States Congress to reinstate mandatory country of origin labeling | Co-sponsor | In committee | April 29, 2026 |
| HB 2234 | Requires counties to report and transfer unclaimed surplus proceeds from real property tax sales to the unclaimed property division of the state treasurer after 3 years | Co-sponsor | In committee | April 29, 2026 |
| HB 3351 | Creates provisions for detachment from a water district for certain customers in certain circumstances | Primary sponsor | In committee | April 23, 2026 |
| HB 1728 | Modifies provisions governing city-county library boards of trustees in St. Charles County | Primary sponsor | In committee | April 23, 2026 |
| HB 2808 | Establishes the offense of permitting, encouraging, aiding, or causing a minor to commit an offense | Primary sponsor | In committee | April 22, 2026 |
| HJR 115 | Proposes a constitutional amendment authorizing a disabled veteran homestead exemption | Co-sponsor | Passed one chamber | April 21, 2026 |
| HJR 119 | Proposes a constitutional amendment changing how judges are selected to certain courts | Co-sponsor | In committee | April 9, 2026 |
| HB 3292 | Establishes the "Motivational Boot Camp Incarceration Program" in the department of corrections and allows certain persons to be sentenced to the program | Primary sponsor | In committee | April 9, 2026 |
| HB 3176 | Establishes the Missouri declaration and bylaws modernization act | Primary sponsor | In committee | April 8, 2026 |
| HB 2760 | Establishes the "PRAISE Act", prohibiting the closure of places of worship during an emergency | Co-sponsor | Passed one chamber | April 8, 2026 |
| HB 2658 | Modifies provisions relating to electronic communications | Primary sponsor | Passed one chamber | April 8, 2026 |
| HB 3364 | Creates new provisions for industrial utility users | Primary sponsor | In committee | March 30, 2026 |
| HB 2562 | Modifies exemptions to the sunshine law | Primary sponsor | In committee | March 26, 2026 |
| HB 3375 | Modifies provisions relating to eminent domain | Primary sponsor | In committee | March 25, 2026 |
| HB 2559 | Requires the general assembly to approve proposed administrative rules | Co-sponsor | Passed one chamber | March 23, 2026 |
| HB 2498 | Modifies provisions relating to the certification of a juvenile for trial as an adult | Co-sponsor | Passed one chamber | March 12, 2026 |
| HB 2807 | Modifies certain provisions relating to the renewable energy | Co-sponsor | In committee | March 11, 2026 |
| HB 1743 | Modifies provisions governing the seizure of property for tax delinquencies | Co-sponsor | In committee | March 10, 2026 |
| HB 1833 | Creates provisions relating to an option to opt out of coverage under the Missouri consolidated health care plan and receive an annual stipend instead | Primary sponsor | In committee | March 5, 2026 |
| HB 2171 | Establishes the "Motivational Boot Camp Incarceration Program" in the department of corrections and allows certain persons to be sentenced to the Program | Co-sponsor | In committee | February 27, 2026 |
| HB 2311 | Modifies provisions relating to the sexual offender registry | Primary sponsor | In committee | February 17, 2026 |
| HB 2172 | Provides procedures for making real property available for school purposes to charter schools and school districts | Co-sponsor | In committee | February 3, 2026 |
| HB 1608 | Modifies provisions relating to gender transition procedures | Co-sponsor | In committee | January 28, 2026 |
| HB 1814 | Modifies and establishes provisions relating to sexual offenses | Co-sponsor | In committee | January 27, 2026 |
| HB 2312 | Establishes the "Act Against Abusive Website Access Litigation" | Primary sponsor | In committee | January 22, 2026 |
| HJR 114 | Proposes a constitutional amendment to assert the right of parents to participate in and direct the education of their children free from government interference | Primary sponsor | In committee | January 8, 2026 |
| HJR 64 | Proposes a constitutional amendment granting homestead and personal property tax exemptions to certain veterans proportional to the veteran's disability rating | Primary sponsor | In committee | May 15, 2025 |
| HB 78 | Grants the air conservation commission the authority to create standards and guidelines | Co-sponsor | In committee | May 15, 2025 |
| HB 549 | Requires every school district to comply with enhanced safety and security standards | Primary sponsor | In committee | May 15, 2025 |
| HB 1594 | Authorizes a transient guest tax for the promotion of tourism in any municipality, upon voter approval | Primary sponsor | In committee | May 15, 2025 |
| HB 1593 | Modifies provisions relating to transportation network companies and establishes the offense of impersonating a transportation network company driver | Primary sponsor | In committee | May 15, 2025 |
| HB 1592 | Modifies provisions relating to the sexual offender registry | Primary sponsor | In committee | May 15, 2025 |
| HB 1558 | Modifies provisions relating to unlawful discriminatory practices | Primary sponsor | In committee | May 15, 2025 |
| HB 1557 | Adds provisions relating to the offense of stealing | Primary sponsor | In committee | May 15, 2025 |
| HB 1471 | Modifies the age of consent | Primary sponsor | In committee | May 15, 2025 |
| HB 1353 | Bans pesticides and pesticide ingredients that were made in China | Co-sponsor | In committee | May 15, 2025 |
| HB 1228 | Establishes the "Defend the Guard Act" | Primary sponsor | In committee | May 15, 2025 |
| HB 1177 | Enacts the "Missouri Homeowners' Association Act" | Primary sponsor | In committee | May 15, 2025 |
| HB 1002 | Modifies provisions for underground facilities notification requirements | Primary sponsor | In committee | May 15, 2025 |
| HB 664 | Requires the general assembly to approve proposed administrative rules | Co-sponsor | In committee | May 14, 2025 |
| HCR 4 | Designates the last week in April each year as "Infertility Awareness Week" | Co-sponsor | In committee | May 13, 2025 |
| HB 236 | Establishes provisions relating to civil liability for publishing or distributing material harmful to minors on the internet | Co-sponsor | In committee | May 12, 2025 |
| HB 927 | Establishes provisions relating to fathership | Co-sponsor | Passed one chamber | April 30, 2025 |
| HB 134 | Establishes the "Missouri Task Force on Nonprofit Safety and Security" | Primary sponsor | Passed one chamber | April 29, 2025 |
| HB 548 | Modifies provisions relating to firearm suppressors | Primary sponsor | In committee | April 23, 2025 |
| HB 530 | Creates provisions relating to health care provider participation in health insurance plans | Co-sponsor | In committee | April 17, 2025 |
| HB 1444 | Creates provisions relating to an option to opt out of coverage under the Missouri consolidated health care plan and receive an annual stipend instead | Primary sponsor | In committee | April 16, 2025 |
| HB 1229 | Modifies provisions relating to certain convention and sports facility authorities | Primary sponsor | In committee | April 16, 2025 |
| HB 986 | Modifies provisions relating to the list of diseases required to be reported to the department of health and senior services | Co-sponsor | In committee | April 2, 2025 |
| HB 60 | Modifies when a registration-inspection certificate can be granted based on the grantees handling of certain nonnative invasive plant species | Co-sponsor | In committee | April 1, 2025 |
| HB 495 | Modifies provisions relating to public safety | Co-sponsor | Enacted | March 26, 2025 |
| HJR 81 | Proposes a constitutional amendment to assert the right of parents to participate in and direct the education of their children free from government interference | Primary sponsor | In committee | February 13, 2025 |