These birds are hatched, raised, and packed in China for consumption here. Most of the feed is likely made or at least grown in the USA, like the solar panels sold here but manufactured in China.
Say what you will and believe any fairy tail that you wish but the thing that drives most of America's food uncompetitiveness is FDA and EPA (not to mention USDA) regulations. I will predict that soon anyone with a back yard flock will be required to submit and follow a Federally mandated Stormwater Runoff Abatement Plan, complete with quarterly runoff water quality laboratory testing, and a daily rainfall measurement, all sent into Uncle Sugar every 90 days for his amusement and edification. This means that you can kiss free range good buy unless you can follow your flock around with a pooper-scooper.
Most of the LARGE commercial hatchery operations already have operations in Asia, mostly China. This is nothing new. The main reason is to protect themselves and their priority bloodlines from local catastrophes like the current Avian Influenza outbreak in this country..
You Californians also best get ready to buy your cage produced "cage free" eggs from China. Chinese farmers unlike the farmers there in the Golden State are not bound by California law. And International law prevents the US of A and especially California from treating those pitifully poor (sarcasm intended) Chinese farmers in an unfair way. And yet some of you laugh at Trump when he says that he will force Mexico to finance our fence on their Northern Border. Because Mexico is concerned with illegal Central American migrants crossing Mexico's Southern border Mexico just may work out something if they think that it will help solve the illegal immigrant problem on Mexico's Southern border.
Look up the word "Duck Easy" (rhymes with speak easy) to see how California law was circumvented by high end restaurants who wanted to continue serving foie gras. Even the Wacky 9th US Court of appeals and the Obama Administration came down on the side of serving foie gras.
When your grandchildren ask, "Grand daddy, where did all the good paying jobs go?" Tell them "Sweetheart, they all went to The Peoples Republic of China, riding on one of Governor Jerry Brown's Moon Beams."