Mike Costlow

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Bills this legislator primary-sponsored. Data from OpenStates.

• HB 3214 Creates the Manufacturing Opportunity Zones Act for large manufacturing developments with access to transportation and proximity to electricity, gas, and water · Introduced · May 15, 2026
• HB 1729 Establishes the "Defend the Guard Act" · May 15, 2026
• HB 1726 Requires every school district to comply with enhanced safety and security standards · May 15, 2026
• HB 1724 Exempts certain salvage title applicants from examination requirements · May 15, 2026
• HB 1725 Modifies provisions relating to transportation network companies and establishes the offense of impersonating a transportation network company driver · May 15, 2026
• HB 2661 Establishes programs for funding energy infrastructure projects. · May 15, 2026
• HB 2657 Modifies certain provisions relating to the renewable energy · 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 · Introduced · May 15, 2026
• HJR 113 Proposes a constitutional amendment granting homestead and personal property tax exemptions to certain veterans proportional to the veteran's disability rating · May 15, 2026
• HB 3100 Establishes the offense of impeding, threatening, or harassing a first responder · Introduced · May 15, 2026
• HB 2561 Modifies provisions governing income exempt from earnings tax · 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 · Introduced · May 15, 2026
• HB 1727 Modifies provisions relating to unlawful discriminatory practices · May 15, 2026
• HB 2857 Enacts provisions governing United States founding documents displayed in public schools · Introduced · May 15, 2026
• HB 2659 Establishes the "Missouri Statewide Mechanical Contractors Licensing Act" · May 15, 2026
• HB 1723 Modifies the age of consent · May 15, 2026
• HB 2660 Modifies provisions relating to additional protections to bear arms · May 15, 2026
• HB 3126 Allows election authorities to publish electronic voting records on the election authority's website · Introduced · May 15, 2026
• HB 3315 Establishes provisions regulating the display of flags at public buildings · Introduced · May 15, 2026
• HB 3481 Modifies Supreme Court Rule 33.01 relating to conditions of release from custody in criminal proceedings · Introduced · May 15, 2026
• HB 1730 Modifies provisions relating to firearm suppressors · Passed One Chamber · May 4, 2026
• HB 3351 Creates provisions for detachment from a water district for certain customers in certain circumstances · Introduced · Apr 23, 2026
• HB 1728 Modifies provisions governing city-county library boards of trustees in St. Charles County · Apr 23, 2026
• HB 2808 Establishes the offense of permitting, encouraging, aiding, or causing a minor to commit an offense · Introduced · Apr 22, 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 · Introduced · Apr 9, 2026
• HB 2658 Modifies provisions relating to electronic communications · Passed One Chamber · Apr 8, 2026
• HB 3176 Establishes the Missouri declaration and bylaws modernization act · Introduced · Apr 8, 2026
• HB 3364 Creates new provisions for industrial utility users · Introduced · Mar 30, 2026
• HB 2562 Modifies exemptions to the sunshine law · Mar 26, 2026
• HB 3375 Modifies provisions relating to eminent domain · Introduced · Mar 25, 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 · Mar 5, 2026
• HB 2311 Modifies provisions relating to the sexual offender registry · Feb 17, 2026
• HB 2312 Establishes the "Act Against Abusive Website Access Litigation" · Jan 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 · Jan 8, 2026
• HB 1177 Enacts the "Missouri Homeowners' Association Act" · Introduced · May 15, 2025
• HJR 64 Proposes a constitutional amendment granting homestead and personal property tax exemptions to certain veterans proportional to the veteran's disability rating · Introduced · May 15, 2025
• HB 1471 Modifies the age of consent · Introduced · May 15, 2025
• HB 1592 Modifies provisions relating to the sexual offender registry · Introduced · May 15, 2025
• HB 1594 Authorizes a transient guest tax for the promotion of tourism in any municipality, upon voter approval · Introduced · May 15, 2025
• HB 1557 Adds provisions relating to the offense of stealing · Introduced · May 15, 2025
• HB 549 Requires every school district to comply with enhanced safety and security standards · May 15, 2025
• HB 1228 Establishes the "Defend the Guard Act" · Introduced · May 15, 2025
• HB 1593 Modifies provisions relating to transportation network companies and establishes the offense of impersonating a transportation network company driver · Introduced · May 15, 2025
• HB 1558 Modifies provisions relating to unlawful discriminatory practices · Introduced · May 15, 2025
• HB 1002 Modifies provisions for underground facilities notification requirements · Introduced · May 15, 2025
• HB 134 Establishes the "Missouri Task Force on Nonprofit Safety and Security" · Passed One Chamber · Apr 29, 2025
• HB 548 Modifies provisions relating to firearm suppressors · Apr 23, 2025
• HB 1229 Modifies provisions relating to certain convention and sports facility authorities · Introduced · Apr 16, 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 · Introduced · Apr 16, 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 · Introduced · Feb 13, 2025

Bills this legislator coauthored or cosponsored. Data from OpenStates.

• 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 · 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 · Introduced · May 15, 2026
• HB 2406 Creates new provisions for the adoption of administrative rules · May 15, 2026
• HB 1670 Modifies provisions relating to income tax on tips · May 15, 2026
• HB 2338 Establishes provisions relating to child support obligations for unborn children · May 15, 2026
• HB 3105 Modifies provisions regarding the rights of firearms owners · Introduced · 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 · May 12, 2026
• HJR 153 Proposes a constitutional amendment changing various provisions relating to judges · May 4, 2026
• HCR 29 Urges the United States Congress to reinstate mandatory country of origin labeling · Introduced · Apr 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 · Apr 29, 2026
• HJR 115 Proposes a constitutional amendment authorizing a disabled veteran homestead exemption · Passed One Chamber · Apr 21, 2026
• HJR 119 Proposes a constitutional amendment changing how judges are selected to certain courts · Apr 9, 2026
• HB 2760 Establishes the "PRAISE Act", prohibiting the closure of places of worship during an emergency · Passed One Chamber · Apr 8, 2026
• HB 2559 Requires the general assembly to approve proposed administrative rules · Passed One Chamber · Mar 23, 2026
• HB 2498 Modifies provisions relating to the certification of a juvenile for trial as an adult · Passed One Chamber · Mar 12, 2026
• HB 2807 Modifies certain provisions relating to the renewable energy · Introduced · Mar 11, 2026
• HB 1743 Modifies provisions governing the seizure of property for tax delinquencies · Mar 10, 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 · Feb 27, 2026
• HB 2172 Provides procedures for making real property available for school purposes to charter schools and school districts · Feb 3, 2026
• HB 1608 Modifies provisions relating to gender transition procedures · Jan 28, 2026
• HB 1814 Modifies and establishes provisions relating to sexual offenses · Jan 27, 2026
• HB 78 Grants the air conservation commission the authority to create standards and guidelines · May 15, 2025
• HB 1353 Bans pesticides and pesticide ingredients that were made in China · Introduced · May 15, 2025
• HB 664 Requires the general assembly to approve proposed administrative rules · May 14, 2025
• HCR 4 Designates the last week in April each year as "Infertility Awareness Week" · Introduced · May 13, 2025
• HB 236 Establishes provisions relating to civil liability for publishing or distributing material harmful to minors on the internet · May 12, 2025
• HB 927 Establishes provisions relating to fathership · Passed One Chamber · Apr 30, 2025
• HB 530 Creates provisions relating to health care provider participation in health insurance plans · Apr 17, 2025
• HB 986 Modifies provisions relating to the list of diseases required to be reported to the department of health and senior services · Introduced · Apr 2, 2025
• HB 60 Modifies when a registration-inspection certificate can be granted based on the grantees handling of certain nonnative invasive plant species · Apr 1, 2025
• HB 495 Modifies provisions relating to public safety · Became Law · Mar 26, 2025