federal nullification; Mexican wolf; reintroduction
HB 2787 prohibits Arizona state agencies, employees, and political subdivisions from using state resources to enforce, administer, or cooperate with the federal Mexican wolf reintroduction program under the Endangered Species Act. It directly affects state government operations by banning state involvement in the wolf program, though it exempts the existing livestock loss program managed by the Livestock Loss Board. The bill does not change federal law but aims to limit state-level support for the program, which the legislature claims has exceeded population goals since 2014 and causes economic harm to ranchers. The bill focuses on state authority over resource use, not altering the federal program itself.
Bill status
vetoed
4 of 5 stages cleared
Introduction
Jan 2026
Committee Review
Mar 2026
House Passage
Feb 2026
Senate Passage
Apr 2026
Vetoed
Apr 2026
Introduced Jan 20, 2026
Vetoed Apr 13, 2026
Maddy AI version diff · 1 comparison
What changed between versions
Introduced Version
→
House Engrossed Version (02/26/2026)
·
1 edit
·
Apr 8, 2026
MINOR
The bill text was reformatted from a standard legislative introduction style to a formal 'House Engrossed' version, including the addition of page headers and a specific statute start/end marker. No substantive policy changes, such as new laws, funding amounts, or eligibility criteria, were made to the actual content of the bill.
TECHNICAL
The document structure was updated to include official House Engrossed headers and a specific 'START_STATUTE' and 'END_STATUTE' block around the new section 1-273, replacing the previous introductory text.
Floor votes · House Feb 26, 2026
How they voted
This bill passed the Senate by voice vote (no roll call recorded).
Full legislative history
Actions timeline
Total actions
15
Key actions
6
Committee
2
Apr 13, 2026
Vetoed
Vetoed by Governor
executive
Apr 8, 2026
Upper · Passed
PASSED
upper
Apr 8, 2026
Upper · Passed
DP
upper
Mar 24, 2026
Upper · Passed
DP
upper
Feb 26, 2026
Lower · Passed
PASSED
lower
Feb 24, 2026
Lower · Passed
DP
lower
Feb 9, 2026
Lower · Passed
DP
lower
1 primary · 0 co-sponsors
Sponsors
Role
Legislator
Party
State
District
P
Lupe Diaz
RRepublican
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