I wonder if anti-bias training for Indian hiring managers have would any effect? Or would taking the hiring of Indians need to be made by non-Indians in order

I wonder if anti-bias training for Indian hiring managers have would any effect? Or would taking the hiring of Indians need to be made by non-Indians in order to avoid this bias? Additionally, there is some selection-bias as well. In other words, do we measure against the Indian pop in the US (or Canada, etc) or against the proportions in India itself and when doing so raw numbers, or number of graduates or graduates from the IITs?