I feel like, for better or worse, the US is sort of obsessed with figuring out how to drive costs down as low as possible, at least historically. So much early American industry was based around making mass-production more and more efficient, e.g. early assembly lines for the Ford company being an obvious case.
In a lot of ways, this is obviously good, most people benefit from lower prices, more value being created, etc, but I think it's also made it so that cheap-but-ethically-dubious manufacturing from other countries becomes increasingly appealing, especially since it's abstracted enough from the end-user to where they can comfortably say "out of site out of mind".
I'm no better; I know very well the conditions of some other countries, and think they're very bad. I also think it's bad that America fought a whole war to end slavery, and instead we just launder it through other countries. Still, despite me thinking all of this, I still generally shop for reasonable prices instead of trying to focus on ethical stuff.