He walked back the tariff on electronics. Do you know who stands to gain the most from that? Taiwan. For every dollar China makes assembling and shipping an IPhone, Taiwan makes $15 for producing the parts. Taiwan and Trump have been doing a lot of negotiations and this change is more of a favor for Taiwan than China.
For example, the only parts of an iPhone made in China are the case and battery.
The case can be easily made by any machine shop with a CNC mill; Apple famously bought Foxconn their mills because they didn't have any.
There are competitive American manufacturers of batteries, with the most famous being Tesla.
The chip is made in Taiwan.
The camera is made in Japan.
The screen is made in South Korea.
The RAM is made in the United States.
The SSD is made in Japan.
The glass is made in the United States.
The modem is made in either South Korea or Taiwan (newer ones have an Apple-designed modem made by TSMC).
All the Taiwanese parts could be made in Arizona at TSMC's new fabs there and many will be as where the most recent and advanced fab is will bounce between Taiwan and the US each generation. What the MSM didn't cover is that
all of TSMC's major customers (including Apple) demanded that they set up fabs in the US, so the CHIPS act was (as Trump has said) a complete waste of money as it paid them to do what they already planned on doing.
Apple could easily make the iPhone in the US but Tim Cook wasted a trillion dollars building factories in China and the sunk cost fallacy has been keeping them there.