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Montana Governor Signs Controversial Bill Defining Gender Binary

3/31/2026

Summary

Story summary

Montana Governor Greg Gianforte signed Senate Bill 437, defining sex as binary by reproductive systems and amending 60 sections.
The changes affect driver's licenses and anti-discrimination protections.
Supporters say the measure provides clarity, while Rep. Zooey Zephyr argues it discriminates against transgender and nonbinary people.
Legal challenges are expected because the measure mirrors a previously unconstitutional one.
The signing faced delays due to procedural hurdles, affecting future LGBTQ rights debates.

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Story summary

Montana Governor Greg Gianforte signed Senate Bill 437, defining sex as binary by reproductive systems and amending 60 sections.
The changes affect driver's licenses and anti-discrimination protections.
Supporters say the measure provides clarity, while Rep. Zooey Zephyr argues it discriminates against transgender and nonbinary people.
Legal challenges are expected because the measure mirrors a previously unconstitutional one.
The signing faced delays due to procedural hurdles, affecting future LGBTQ rights debates.