Under U.S. federal law, and under the few state laws of which I am aware, it is not unlawful to expand a pool of applicants based on a protected class such as race, age, sex, etc., but it is unlawful to select an applicant for employment based on a protected class. An advertisement could lawfully encourage applications by persons having certain protected attributes (e.g., born and raised in South America; Native American; Veteran; transgender), but it could not lawfully suggest that hiring preference would be given to applicants with those protected attributes. That's a fine line, and it's easy for an employer to cross it, either willfully or inadvertantly. It's best--from both a practical and a legal perspective--to determine the hiring criteria and process before seeking applicants, and to separate the screening process from the advertising process.

Under U.S. federal law, and under the few state laws of which I am aware, it is not unlawful to expand a pool of applicants based on a protected class such as race, age, sex, etc., but it is unlawful to select an applicant for employment based on a protected class. An advertisement could lawfully encourage applications by persons having certain protected attributes (e.g., born and raised in South America; Native American; Veteran; transgender) in order to diversify the workforce, but it could not lawfully suggest that hiring preference would be given to applicants with those protected attributes. That's a fine line, and it's easy for an employer to cross it, either willfully or inadvertantly. It's best--from both a practical and a legal perspective--to determine the hiring criteria and process before seeking applicants; and to separate that screening process from the advertising process. The advertising process could, for example, target underrepresented groups as long as it did not preclude other persons/groups from learning about or applying for the opportunities.