In a preview of the current controversy in the United States over which bathroom transgender people should use, Blatt claims she was denied use of the women's room. She was fired, she said, when Cabela's alleged she threatened a co-worker's child during an altercation at work, a claim Blatt denies.

Cabela's, through a company spokesman, declined to comment.

The lawsuit, brought by Blatt in 2014, also challenges a little-known clause in the Americans with Disabilities Act of 1990 (ADA) as discriminatory because it specifically excludes transgender people from protection.

Cabela's has called on U.S. District Judge Joseph Leeson of the Eastern District of Pennsylvania to dismiss Blatt's claims under the ADA. The judge's ruling on that motion, the next step in the case, could come at any time.

Blatt's lawyers, Neelima Vanguri and Brian Farrell of Philadelphia-based Sidney L. Gold & Associates, are asking the judge to rule that the clause of the ADA violates the U.S. Constitution because it denies equal protection for all under the law.