The parts content on my 2006 Accord EX-L is:

70% USA 15% Japan and the other 15% sourced elsewhere.

In any case, I believe this is irrelevant. I cannot speak for other manufacturers who may be having known quality issues with their U.S. based plants (as I know Kia is among one of them) I believe these are problems within the plant and company that have little to do with their location and/or sex/race of their employees, but I can say that the Marysville Honda plant has no such issues... nor do the Toyota plants in California and Kentucky.