We couldn't make an iPhone because apple would refuse to cooperate, not because of a technical limitation. We could make a similarly capable phone though.
Not just that, the raft of features that may have to be disabled until that performance and performance per watt gets back to where it is today.
Apple’s putative refusal to cooperate is surely not the only barrier here. I doubt U.S. consumers would pay a premium for a U.S. iPhone whether Apple thought it wise or not. But when the U.S. president’s branded Made in America phone comes out later this year I guess we’ll see. I’m sure the release is just around the corner.
How about the new Trump phone?