The proposed bill SB1628 seeks to amend Arizona law by establishing definitions for sex-based terms and clarifying the application of sex discrimination laws. It requires that any policy, program, rule, or law prohibiting sex discrimination must ensure fair treatment of both females and males in relation to similarly situated members of the opposite sex. The bill mandates the replacement of the term "gender" with "sex" in all state laws, rules, publications, orders, actions, programs, policies, and signage when updates are necessary. It also allows for single-sex environments in certain situations, particularly with respect to biology.

The bill defines terms such as "boy," "father," "female," "girl," "male," "man," "mother," and "sex," emphasizing biological sex at birth and excluding gender identity. It requires public entities collecting vital statistics to identify individuals as either male or female for compliance with antidiscrimination laws and data collection purposes. The bill is intended to bring clarity and uniformity to Arizona laws regarding sexual discrimination and equality of the sexes. It includes a severability clause and is to be known as the "Arizona Women's Bill of Rights."