The raging policy debate in Washington over the export of advanced AI chips to China found a recent proof point laying bare the wisdom of imposing tech bans, courtesy of a much more primitive chip.
In October 2022, the Biden Administration, as part of a broader restriction on the export of advanced U.S. technology, imposed export restrictions on what is called the 14-nanometer chip, which is commonly used in cell phones. Reflecting current thinking at the time, the White House believed banning the humble chip, which was developed by Intel Corp. in 2014, would set back the fortunes of SMIC,...