Foxconn is currently conducting evaluations in Detroit and Los Angeles (with others on tap), according to “market watchers” cited by Taiwan-based tech site Digitimes which tracks supply chain manufacturers.
But if the report turns out to be true, it doesn’t necessarily mean Foxconn would be making iPhones or iPads in the U.S. anytime soon. Digitimes says that since Apple's products are “rather complicated” to manufacture, Foxconn is more likely to start by focusing on LCD TV production, which can be highly automated and easier.
Apple’s Tim Cook is on record as saying he would like iPhones and iPads to be made in the U.S., but right now the higher cost and lack of appropriate facilities make that impractical.
At the AllThingsD tech conference earlier his year he noted that Apple does actually make some components in the U.S. “The glass on your iPhone is made in a plant in Kentucky,” Cook said and “the engine for the iPad and iPhone are built in the U.S. in Austin.”