Is it really that hard to wrap one's head around the equal-pay-for-equal-work argument? Around basic fairness? Offer the same pay across the board for the same work - whether that worker is a Woman or a Nigerian. That's the basic exploitation at play here: the value of the work is $1 (for argument's sake), the US man gets $1, but the US Woman gets $0.82 and the Nigerian gets $0.03. On what basis? Being born a Woman. Or being born in Nigeria. It's not even based on skills, which is this whole different ball of wax. No, it's based on what 'your kind' make. Not what the work is worth, not on any kind of rational basis, simply based on what your kind make or what those around you make. That's deeply unfair. Offer them all $1.
Sure, now the counter argument can be, life is unfair, it is what it is. If the follow on to that is that the status quo is acceptable and that no change needs to be made, then that indicates a lack of empathy, or in the extreme, capitalistic psychopathy (which needs to be regulated, within reason, for an actual greater good). If there is empathy, which there presumably is - because I see an argument above to export jobs to reduce poverty, or to improve African lifespans - let's start by changing structural injustices. And using impoverished Nigerians to exploit US Women is not it. Pay them that da** $1 for $1 of work! Not try to get away with $1.85 for $3 of work.