The US has run out of ATACMS to give to Ukraine. We stopped making them years ago;
This is false.
As of late 2023, Lockheed Martin was producing ~500 ATACMS per year. Although not all of these are destined for the US, the FY2023 defense bill put $7.7 billion in funding in place for US acquisition of 1700 ATACMS missiles. See page 1128:
Older M39A1 missile bodies are also being refurbished to modern standards and brought back to active inventory. Some of this work is still being carried out under funding from the FY17 and FY18 defense appropriations. It's hard to tell how many are being converted though - $214 million was spent on this in 2021 and estimates are that the cost is anywhere from $1.1 to $1.4 million per missile.
Even after transfers to Ukraine (which reportedly are anywhere from 100 to 180 missiles), low estimates are that the US has somewhere in the range of 800 to 1000 ATACMs remaining in inventory. Upper estimates are that inventory is closer to 1400. Hard to tell, details are classified.
and the DOD is saving the rest of what we have for a potential war with China.
They're not. The US has made at least two transfers of ATACMS to Ukraine. One in October 2023 and another in March - April 2024.
Ukraine is requesting additional deliveries, which are under active consideration at the moment. The 2024 Ukraine appropriation authorisation requires additional ATACMS deliveries for Ukraine. Likely longer ranged M57s.
We have a long range replacement for the ATACMS; but we're still working out the bugs on that one.
Precision Strike Missile (PrSM) achieved initial operating capability in November and deliveries of the full 'Increment 1' production version started in December 2023. Pre-production/test deliveries of ~120 missiles were completed in 2021 through 2023.
Lockheed Martin expects to deliver 110 by the end of September 2024 and there are contracts in place for deliveries of another 230 in the 12 months following. Full rate production (~400 per year) is due to start in late 2025.
The "bugs" in PrSM are mostly worked out, although the Increment 1 missiles are only cleared for use against static targets. Multiple successful tests of the improved 'Increment 2' missile have been conducted in the last 6 months, including hitting moving sea and land targets. Deliveries are expected to start in early 2026, in the form of a land-based ASM. The very long range Increment 4 (range of 600 miles plus) is slated for initial service entry in 2027/2028.