It’s absolutely the truth there’s nothing in the free-trade philosophy that would prevent products made in the Nazi death camp from being sold in America.
In fact it’s happening today North Korea has active death camps and concentration camps and we allow their products to be sold here.
To a free Trader it’s simply finding a way to build the product as absolutely inexpensively as possible. Free traders ensured that China got permanent most favored nation status and it was disconnected from their behavior.
What have you bought (or even seen) that was identified as being made in North Korea? Nothing.