https://en.wikipedia.org/wiki/Micron_Technology
Micron Technology, Inc. is an American multinational semiconductor company that manufactures computer memory and computer data storage products, including dynamic random-access memory (DRAM), flash memory, High Bandwidth Memory (HBM), and solid-state drives (SSDs). Founded in 1978 in Boise, Idaho, Micron is the only major American computer memory manufacturer.[3] It is one of the "Big Three" computer memory manufacturers, along with the South Korean companies Samsung Electronics and SK Hynix.[4]
They have fabs in the US (and are building more).
https://www.micron.com/us-expansion/
Micron is accelerating its U.S. fab and technology investments, increasing its planned spend to more than $250 billion through 2035, driven by surging demand for memory in the AI era. These investments reflect Micron's confidence in its technology leadership and are designed to support its long-term goal of producing 40% of its DRAM in the U.S. while creating additional good-paying jobs.