They don't "have them", they're building them.

https://www.micron.com/us-expansion/id

> Micron has already achieved key construction milestones on its first Idaho fab with DRAM output scheduled to begin in 2027.

https://investors.micron.com/news-releases/news-release-deta...

> Production is expected to start in 2030 with the fabs ramping throughout the decade.

Until they start outputting DRAM in any meaningful quantity, they're not relevant.

Are those plants still functional after CHIPS act was axed? I thought they mainly produce in Asia now.

> Currently, 100% of leading-edge DRAM production occurs overseas, primarily in East Asia.[0]

They make DRAM for cars, not computers, in the USA. They've promised they'll bring manufacturing onshore any time soon, which effectively means they'll wait until Trump forgets about it.

0: https://www.nist.gov/news-events/news/2025/06/president-trum...