What started as a widely backed proposal to locate a new Smithsonian American Women’s History Museum on the National Mall devolved into a partisan fight Thursday after Republicans revised the legislation to ensure no transgender people are included in the exhibits.

Republicans amended the bill to say President Donald Trump may pick an alternative site for the museum and specified the museum could include only “biological women.”

The House has rejected a proposal for a new Smithsonian American Women’s History Museum on the National Mall.

The bill, led by Rep. Nicole Malliotakis (R-NY), failed 204-216, with no Democratic support and six Republican defections.