Do hiring committees actually give preference to underrepresented groups?

For reference, I am a woman of color in mathematics and I am applying for academic jobs.

I noticed that many of these applications say something like "Women (and other underrepresented groups) are encouraged to apply," or "We especially welcome applications from minority groups, women, persons with disabilities,..."

Yet there is also a non-discrimination clause saying " All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, etc. ..."

Is preference actually given to these underrepresented groups? What impact does knowledge of the underrepresented group the applicant is a part of have in the reviewing process?