We had a similar "request" from a customer related to worker's rights, child & forced labour etc. The response from our MD was a little blunt but - once "padded" for the benefit of the customer - I pointed out that virtually all of us in the West have legislation coming out of our ears specifically outlawing everything in the list of "you shall prove that you do not"s on their questionnaire.
Certainly, discrimination due to race, colour, gender, REDACTED orientation or creed is completely outside the scope of any of the "usual" QMS-type standards - but legislated for in Europe up to and including the Human Rights directive. At least one TS Auditor has challenged me on this in the past quoting clause 4.1, Note 3 of TS16949:2009 which includes the phrase "all customer, statutory & regulatory requirements". He did back down when I asked him to put it in writing as an NCR but taking that clause to the "nth" degree could lead you into a whole world of issues.