The company has supplied the glass for every iPhone since 2007. This new partnership extends for ten years.
Earlier this month, Apple CEO Tim Cook made the announcement that investing domestically made sense because of manufacturing's inherent ripple effect for job creation.
"If we can create many manufacturing jobs around, those manufacturing jobs create more jobs around them because you have a service industry that builds up around them," Cook said at the time. Apple is expected to announce investments in coding and developer training this year as well.
If you'll recall, way back in 2013 Apple built the Mac Pro in the United States. Its mobile device and laptop manufacturing primarily take place in China, however, and given the company's relationship with manufacturer Foxconn, Apple bowing to Donald Trump's campaign-trail threats is highly unlikely.