The House on Thursday voted down legislation that would have authorized a new Smithsonian American Women’s History Museum on the National Mall, after Republican leaders added language to bar transgender individuals from being included in exhibits. The 204-216 vote defeated a measure that had drawn broad bipartisan backing in its original form, after GOP amendments also imposed a requirement for a “diversity” of views and gave President Donald Trump the final say on the museum’s location.

“The bill was a straightforward, simple bill,” said Rep. Teresa Leger Fernandez, a Democrat from New Mexico who chairs the Democratic Women’s Caucus, earlier in the week. “You kind of ruined it with your trans obsession and your culture wars.”

Republicans countered that Democrats were overreacting to the revisions and were now blocking progress toward a museum that supporters from both parties have sought for years. The dispute turned what had been a nearly settled authorization into a partisan standoff on the House floor Thursday afternoon.

The original legislation, introduced with bipartisan co-sponsors, would have authorized the Smithsonian Institution to plan and build the museum on the National Mall, a location advocates have pursued for decades as the preeminent site for a national museum dedicated to women’s history. The Republican substitute amendment rewrote key provisions: it barred the museum from including “biological men,” language widely understood to exclude transgender women, from any exhibits; it required that exhibits represent “a diversity” of views on women’s history; and it vested final decision-making authority on the museum’s location with the president.

Leger Fernandez’s remarks came as Democrats on the House floor accused Republican leadership of sabotaging a consensus bill to score political points over transgender issues. “It was a simple bill,” she said.

Rep. Joe Morelle, a New York Democrat, said the changes made the bill unacceptable to his caucus. “This was about honoring the contributions of women to American history,” Morelle said. “Instead, it became a vehicle for exclusion.”

Republicans defended the amendments as necessary guardrails. Rep. Nicole Malliotakis, a New York Republican, said the changes ensured the museum would present women’s history accurately and fairly, without ideological bias. Rep. Tim Burchett, a Tennessee Republican, argued that Democrats were the ones blocking progress. “They want a museum, but they want it on their terms,” Burchett said.

The vote split largely along party lines, with 204 voting in favor and 216 opposed. The measure needed a simple majority to pass.

The outcome leaves the next steps for the museum unclear. Congress has debated locating a women’s history museum on the Mall for years, and the Smithsonian has already begun preliminary planning for a museum dedicated to American women’s history, though without a specific site authorization or dedicated funding stream. Thursday’s defeat does not cancel those efforts, but it removes the legislative path that had been the most advanced in recent sessions.

The amendment language restricting transgender inclusion reflects a broader push by House Republicans this session to legislate on transgender issues across a range of policy areas. Similar language has been proposed in bills governing sports participation, school facilities, and healthcare.