Trump to announce that US Space Command will move headquarters to Alabama - CNN
US Space Command, which is a joint command and separate from the US Space Force military branch, is currently housed in Colorado Springs. The decision to go with Alabama comes after an April report by the Department of Defense Inspector General, who “could not determine” the rationale for choosing Colorado.
The headquarters’ location has been the source of controversy.
Some background: During Trump’s first administration, officials decided to move it to Alabama, and a report from the Government Accountability Office (GAO) in 2022 found the US Air Force’s decision-making process had “significant shortfalls in its transparency and credibility.” Then in 2023, President Joe Biden elected to have it remain in Colorado, angering Alabama lawmakers.
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So it's obviously quid pro quo. 
I suspect the long history of the US Army here is a big factor. Redstone was here for decades before they brought in von Braun's team, which spent a year or two in TX (IIRC) first. They have test stands big enough for the Shuttle and, I suspect, for the new big boosters as well. The Space Shuttle was actually lifted by a crane onto the test stand for firing, dangling from a hook in its nose. We hear them test-firing engines occasionally, but no idea exactly what's going on out there. There's also a fair amount of "undeveloped" land on the base, which might simplify the planning and paperwork for new facilities.
Basically, there's already a fully functioning military base here, and a lot of people who move back and forth between NASA and the military. Defense/Aerospace contractors are the biggest companies in the area. Oh, and there's a river port in nearby Decatur where rocket components are shipped upriver from MS. I kind of doubt the hardware capabilities are as important as the organizational infrastructure and available personnel, however.
Don't really see the Space Command being a good idea, but there are probably fewer better places to put it -- although I would have thought whoever voted for CO would have wanted the whole works kept inside Cheyenne Mtn, for "hardening". 
