A tour of the chip production lines of Apple’s partners practically demonstrates how the company’s drive to expand semiconductor production in Arizona and Texas is focused more on reducing geopolitical risk and less on restoring big jobs in American factories.
A February 25 report outlines how Apple and its suppliers are rebuilding parts of the U.S. chip supply chain, from silicon wafers in Texas to final assembly in Houston. The strategy aims to strengthen supply resilience following pandemic shortages and rising tensions over Taiwan.
Apple CEO Tim Cook appeared alongside President Donald Trump to highlight domestic investment. Today, chip factories are highly automated operations powered by robotics and precision machinery.
These facilities do not require the large labor force that once determined the expansion of the American factory.
TSMC’s Arizona factory may make some Apple Silicon chips
A domestic pipeline, as he states The Wall Street Journalit begins in Sherman, Texas, where purified silicon is melted and formed into 12-inch wafers. These wafers are supplied to the Taiwan Semiconductor Manufacturing Co. factory. in Arizona, where extreme ultraviolet lithography systems etch them into logic chips in sealed cleanrooms.
TSMC’s campus in Arizona covers about 2,000 acres. Image credit: Christopher Payne
TSMC’s campus in Arizona covers about 2,000 acres and is part of a massive investment plan worth tens of trillions of dollars, with further expansion on the horizon. The plant makes the A16 processors used in the iPhone 15 and the entry-level iPad.
Apple doesn’t operate factories, but its long-term chip orders give TSMC the financial security to build expensive manufacturing plants. Apple’s demand for advanced silicon has been a key driver of TSMC’s most ambitious projects.
Apple’s advanced Silicon manufacturing still depends on Taiwan
Arizona has made progress, but the latest A19 chip in the iPhone 17 still relies on Taiwan’s advanced manufacturing technology, just like the M5. Taiwan has leading process hubs, deep engineering talent, established supply networks and higher production volume.
And TSMC’s maintenance of the latest chip manufacturing technology is mandated by Taiwanese law.
Chips made in Arizona require additional packaging steps, mostly done in Asia, before they can be used in finished devices. Advanced packaging remains a major gap in the domestic supply chain.
Silicone wafer after it has been ground. Image credit: Christopher Payne
Advanced packaging is the stage where finished silicone dies are cut from wafers and mounted on substrates. Engineers connect them and connect them to memory and other components.
The process may involve stacking multiple dies vertically and using high-bandwidth interconnects before sealing the chip for installation on a circuit board. For high-performance processors like Apple Silicon, packaging has a direct impact on speed, power efficiency and thermal management.
Arizona may produce mature and advanced nodes, but Taiwan remains central to Apple’s most sophisticated silicon. Amkor’s multibillion-dollar advanced packaging campus in Arizona, expected to be in production in 2028, won’t immediately eliminate the need to ship chips overseas for packaging.
The assembly in Houston shows the limits of the production scale of the American Apple
Apple’s most visible U.S. assembly effort is centered in Houston, where Foxconn assembles roughly 10 AI servers per hour to run Apple’s data center. The company is adding a Mac mini desktop build to the same spot later in 2026.
Apple’s test line of servers in Houston, Texas. Image credit: Christopher Payne
In Texas, hundreds of workers are involved in final assembly, testing and packaging. The workforce is small compared to the massive iPhone assembly complexes in Asia, which employ tens of thousands of people, very seasonally.
Servers and desktops are easier to assemble in the United States because they come in much lower volumes than iPhones. iPhones are in the hundreds of millions every year, and that metric still favors Asia for the highest-volume Apple products.
Apple’s U.S. semiconductor strategy is to secure the supply chain for the long term
Apple’s U.S. semiconductor strategy plays out over decades, not annual product launches. Matching Taiwan’s scale and expertise would require long-term investment over many years.
Silicone plates are polished. Image credit: Christopher Payne
Arizona factories help reduce exposure to supply disruptions caused by pandemics, natural disasters or geopolitical conflicts. They add another layer of protection to Apple’s global supply chain.
Taiwan still leads in high-end Apple Silicon production, where the most advanced process nodes are concentrated. For now, American expansion acts as an insurance policy against geopolitical disruption.