SB 1421 Missouri Senate · 2026 Regular Session

Modifies provisions relating to public safety

The context provided does not include sufficient details about SB 1421's specific provisions, affected groups, or policy mechanisms. The bill title and abstract only state it "modifies provisions relating to the unlawful use of unmanned aircraft in certain areas" without describing changes to laws, penalties, or scope. No concrete policy changes, key mechanisms, or affected parties are specified in the available information. As a procedural bill with no substantive details in the provided context, a meaningful summary cannot be generated.
Bill status signed all 5 stages cleared
Introduction
Dec 2025
Committee Review
May 2026
Senate Passage
May 2026
House Passage
May 2026
Signed into Law
Jul 2026
Introduced Dec 9, 2025 Signed Jul 9, 2026
Maddy AI version diff · 3 comparisons

What changed between versions

3/24/2026 - SS S offered & adopted (Schroer)--(5940S.03F) 3/24/2026 - Adopted 5/13/2026 - CCS S Third Read and Passed - EC adopted 5/13/2026 - Passed · 3 edits
MINOR
The bill was converted from a single Senate substitute focusing solely on drone regulations into a comprehensive Conference Committee substitute that repeals and replaces sixty-eight existing sections across multiple legal codes. This change expands the bill's scope from a narrow focus on unmanned aircraft to a broad public safety overhaul, likely incorporating the original drone provisions into a larger legislative package.
Scope change
The bill's scope expanded significantly from a single topic (unmanned aircraft) to a comprehensive public safety bill affecting dozens of existing statutes.
SCOPE

The bill title and purpose changed from repealing only section 577.800 regarding drones to repealing and replacing sixty-eight sections relating to public safety.

The specific text defining offenses for unlawful drone use over open-air facilities and critical infrastructure was removed from the main act description.

The bill structure changed from a Senate substitute to a Conference Committee substitute, indicating a final compromise version combining House and Senate proposals.

Floor votes

How they voted

This bill passed the Senate by voice vote (no roll call recorded).
Full legislative history

Actions timeline

Total actions
100
Key actions
69
Committee
17
Jul 9, 2026
Signed into law
Signed by Governor
executive
May 28, 2026
Upper · Passed
Reported Duly Enrolled Rules, Joint Rules, Resolutions & Ethics Committee
upper
May 15, 2026
Upper · Passed
Truly Agreed To and Finally Passed
upper
May 15, 2026
Lower · Passed
CCS H Third Read and Passed - EC adopted
lower
May 15, 2026
Lower · Passed
House conferees allowed to exceed the differences H adopted
lower
May 13, 2026
Upper · Passed
CCS S Third Read and Passed - EC adopted
upper
May 13, 2026
Upper · Passed
CCR S offered & adopted (5940S07.1SR)
upper
May 5, 2026
Lower · Passed
H Third Read and Passed, as amended EC - adopted
lower
May 5, 2026
Lower · Passed
HA 44 H offered & adopted (Sharp (37))--(5940S03.82H)
lower
May 5, 2026
Lower · Passed
HA 43 H offered & adopted (Smith (46))--(5940S03.02X)
lower
May 5, 2026
Lower · Passed
HA 42 H offered & adopted (Simmons)--(5940S03.49H)
lower
May 5, 2026
Lower · Passed
HA 41 H offered & adopted (Cook)--(5940S03.65H)
lower
May 5, 2026
Lower · Passed
HA 40 H offered & adopted (Miller)--(5940S03.46H)
lower
May 5, 2026
Lower · Passed
HA 39 H offered & adopted (Hewkin)--(5940S03.84H)
lower
May 5, 2026
Lower · Passed
HA 38 H offered & adopted (Irwin)--(5940S03.36H)
lower
May 5, 2026
Lower · Passed
HA 36 H offered & adopted (Phelps)--(5940S03.14H)
lower
May 5, 2026
Lower · Passed
HA 35 H offered & adopted (Sassmann)--(5940S03.33H)
lower
May 5, 2026
Lower · Passed
HA 34 H offered & adopted (Reedy)--(5940S03.20H)
lower
May 5, 2026
Lower · Passed
HA 33 H offered & adopted (Mayhew)--(5940S03.71H)
lower
May 5, 2026
Lower · Passed
HA 32, as amended, H adopted --(5940S03.30H)
lower
May 5, 2026
Lower · Passed
HA 1 to HA 32 H offered & adopted (Veit)--(5940S03.24X)
lower
May 5, 2026
Lower · Passed
HA 31 H offered & adopted (Jones (88))--(5940S03.32H)
lower
May 5, 2026
Lower · Passed
HA 30 H offered & adopted (Costlow)--(5940S03.47H)
lower
May 5, 2026
Lower · Passed
HA 29 H offered & adopted (Caton)--(5940S03.73H)
lower
May 5, 2026
Lower · Passed
HA 28 H offered & adopted (Byrnes)--(5940S03.80H)
lower
May 5, 2026
Lower · Passed
HA 27 H offered & adopted (Hausman)--(5940S03.81H)
lower
May 5, 2026
Lower · Passed
HA 1 to HA 26 H offered & adopted (Brown C.)--(5940S03.11X)
lower
May 5, 2026
Lower · Passed
HA 25 H offered & adopted (Taylor (48))--(5940S03.51H)
lower
May 5, 2026
Lower · Passed
HA 24, as amended, H adopted --(5940S03.39H)
lower
May 5, 2026
Lower · Passed
HA 2 to HA 24 H offered & adopted (Reuter)--(5940S03.15X)
lower
May 5, 2026
Lower · Passed
HA 1 to HA 24 H offered & adopted (Collins)--(5940S03.13X)
lower
May 5, 2026
Lower · Passed
HA 23 H offered & adopted (Seitz)--(5940S03.04X)
lower
May 5, 2026
Lower · Passed
HA 22 H offered & adopted (Kelley)--(5940S03.44H)
lower
May 5, 2026
Lower · Passed
HA 21 H offered & adopted (Hovis)--(5940S03.21H)
lower
May 5, 2026
Lower · Passed
HA 20, as amended, H adopted --(5940S03.41H)
lower
May 5, 2026
Lower · Passed
HA 1 to HA 20 H offered & adopted (Myers)--(5940S03.10X)
lower
May 5, 2026
Lower · Passed
HA 19 H offered & adopted (Hinman)--(5940S03.26H)
lower
May 5, 2026
Lower · Passed
HA 18, as amended, H adopted --(5940S03.94H)
lower
May 5, 2026
Lower · Passed
HA 1 to HA 18 H offered & adopted (Peters)--(5940S03.09X)
lower
May 5, 2026
Lower · Passed
HA 17 H offered & adopted (Proudie)--(5940S03.37H)
lower
May 5, 2026
Lower · Passed
HA 16 H offered & adopted (Roberts)--(5940S03.22H)
lower
May 5, 2026
Lower · Passed
HA 15 H offered & adopted (Parker)--(5940S03.25H)
lower
May 5, 2026
Lower · Passed
HA 14 H offered & adopted (Dolan)--(5940S03.43H)
lower
May 5, 2026
Lower · Passed
HA 13 H offered & adopted (Chappell)--(5940S03.97H)
lower
May 5, 2026
Lower · Passed
HA 12 H offered & adopted (Haley)--(5940S03.28H)
lower
May 5, 2026
Lower · Passed
HA 11 H offered & adopted (Schulte)--(5940S03.96H)
lower
May 5, 2026
Lower · Passed
HA 10 H offered & adopted (Simmons)--(5940S03.60H)
lower
May 5, 2026
Lower · Passed
HA 9 H offered & adopted (Vernetti)--(5940S03.18H)
lower
May 5, 2026
Lower · Passed
HA 7 H offered & adopted (Van Schoiack)--(5940S03.27H)
lower
May 5, 2026
Lower · Passed
HA 6 H offered & adopted (Peters)--(5940S03.83H)
lower
May 5, 2026
Lower · Passed
HA 5 H offered & adopted (Falkner)--(5940S03.24H)
lower
May 5, 2026
Lower · Passed
HA 4 H offered & adopted (Overcast)--(5940S03.75H)
lower
May 5, 2026
Lower · Passed
HA 3 H offered & adopted (Davidson)--(5940S03.87H)
lower
May 5, 2026
Lower · Passed
HA 2 H offered & adopted (Jones (12))--(5940S03.09H)
lower
May 5, 2026
Lower · Passed
HA 1 H offered & adopted (Jones (12))--(5940S03.03H)
lower
Apr 22, 2026
Lower · Passed
Reported Do Pass H Fiscal Review
lower
Apr 22, 2026
Lower · Passed
Voted Do Pass H Fiscal Review
lower
Apr 21, 2026
Committee
Referred H Fiscal Review Committee
lower
Apr 21, 2026
Lower · Passed
Reported Do Pass H Rules - Administrative
lower
Apr 21, 2026
Lower · Passed
Voted Do Pass H Rules - Administrative
lower
Apr 16, 2026
Committee
Referred H Rules - Administrative
lower
Apr 14, 2026
Lower · Passed
Reported Do Pass H Emerging Issues
lower
Apr 13, 2026
Lower · Passed
Voted Do Pass H Emerging Issues
lower
Mar 26, 2026
Committee
Referred H Emerging Issues
lower
Mar 25, 2026
Upper · Passed
S Third Read and Passed - EC adopted
upper
Mar 25, 2026
Upper · Passed
Reported from S Fiscal Oversight Committee
upper
Mar 25, 2026
Upper · Passed
Voted Do Pass S Fiscal Oversight Committee
upper
Mar 24, 2026
Committee
Referred S Fiscal Oversight Committee
upper
Mar 24, 2026
Upper · Passed
Reported Truly Perfected S Rules, Joint Rules, Resolutions and Ethics Committee
upper
Mar 24, 2026
Upper · Passed
SS S offered & adopted (Schroer)--(5940S.03F)
upper
Mar 9, 2026
Upper · Passed
Reported from S Judiciary and Civil and Criminal Jurisprudence Committee
upper
Mar 4, 2026
Upper · Passed
Voted Do Pass S Judiciary and Civil and Criminal Jurisprudence Committee
upper
Feb 25, 2026
Upper · Passed
Hearing Conducted S Judiciary and Civil and Criminal Jurisprudence Committee
upper
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Nick Schroer
Nick Schroer
RRepublican
MO
2