Corporate and consumer greed in North America can make life a living hell for citizens half a world away. Take The Congo, where children are forced at gunpoint to mine for the things that make our tech toys tick and tock, like gold, cobalt, tin, tungsten, and tantalum.

Sourcing these goods on the cheap from The Congo saves North American companies a buck, but is known to put billions (yes, billions) into the pockets of violent war lords in The Congo, who exploit the mining of these elements.

That’s why, in 2010, former President Obama passed policy that basically banned American companies from using “conflict minerals” like these in their products. Trump is at work to undo that law, because he says it has had a negative impact on American businesses. Without much to substantiate the figure, he says Obama’s law will cost American companies “around $200 million per year.”

Global Witness studies the role of mineral mining in The Congo’s conflict. They have stated that Trump’s executive order would “be a gift for companies wanting to do business with the criminal and the corrupt [because Obama’s] law helps stop U.S. companies from funding conflict and human rights.”

More than 5.4 million people have been killed in The Congo since the late 90s, and hundreds of thousands of rapes are tied to warring in the region.

The conflict is generally regarded as the world’s deadliest since WWII. Robin Wright, of House of Cards fame, hosts a stunning documentary on the slave labour funded by American businesses trading in conflict minerals. It’s called When Elephants Fight. “I find it unacceptable that as consumers we allow this to go on,” Wright has said.

Many big corporations can’t get behind doing business that wreaks such havoc on women and children in Africa. Companies like Apple, Tiffany & Co., Blackberry, Motorola and Intel declare they have moved away from conflict minerals and towards ethically mined minerals. They have stated that Trump nullifying Obama’s law won’t change their stance.

“As a shareholder,” says Intel CEO Brian Krzanich, “you should care about this … it did cost us a lot to set up [using ethically sourced goods instead], but now it’s running, the cost of the actual materials is no more.”