Ms Warren meanwhile is facing questions about her legal work to help an industrial conglomerate fight a requirement that it pay for retired coal miners' healthcare.
BBC: Elizabeth Warren 'mocked with Native American gestures'
2.
Two are coal in Queensland, and she has since sold stakes in those to an Indian conglomerate in a deal worth more than a billion dollars.
NEWYORKER: The Miner??s Daughter
3.
Patrice Motsepe is the Chairman of African Rainbow Minerals (ARM), a publicly-traded mining conglomerate which has interests in platinum, nickel, chrome, iron, manganese, coal, copper and gold.