I definitely think that there is significant room for improvement when it comes to hiring. However I think that significant progress towards #1 through preventative screening is next to impossible.
If they focused first on #2 - finding the right people for the job - where "right" meant the proper skill set for the job, that would go a long way to solving #1 - following the law on hiring practices. For if they are truly hiring on skill alone then they have already passed the biggest hurdle HR has in #1 - discriminatory hiring practices - because skill set does not look at sex or gender or race or age or any of that.
