The bottom line is that a business should be able to set whatever criteria they want for hiring. What they are doing might ethically be wrong, but the hiring manager may be feeling they are doing the right thing. This is different than a skin color issue because we can blend in with other people, where as it is pretty difficult to hide your skin color.
Personally, I would not dress for any job other than what I though would be the right attire. Any of us crossdressers should consider how our actions affect others. What would be wrong with dressing in the proper male attire for a job? The only exception I would consider past this is one who is doing the required 24/7 female attire prior to SRS. Still, nobody should be able to tell an employer how to run their business beyond sensible safety regulations and the likes.
How do such laws read anyway? I am not familiar with them. I might do some research, but at the moment, I am in the dark to such an example.
