President Donald Trump has officially announced that Space Command's headquarters will be moving to Alabama.

“The U.S. Space Command HQ will move to the beautiful locale of a place called Huntsville, Alabama, forever to be known from this point forward as Rocket City," Trump said from the Oval Office Tuesday.

He said that when he created Space Command in his first term, he planned to make its headquarters in Alabama but that the Biden administration established it instead in Colorado.

In annoucing the move, Trump said a "big problem" he has with Colorado is its use of mail-in voting. Trump has long claimed without clear evidence that mail-in voting increases fraud and he's seeking to ban it as a practice by states in U.S. elections.

"So that played a big factor," Trump said of relocating Space Force's command center.

The president said that mail-in voting leads to "automatically crooked elections."

Trump's predecessor in the White House, Joe Biden, had placed Space Force's headquarters in Colorado, a choice he reversed on Tuesday.

The long-expected decision from Trump caps a four-year tug of war between two states and opposing administrations about where to locate U.S. Space Command, an intense fight because the headquarters would be a significant boon to the local economy. Alabama and Colorado have long battled to claim Space Command, with elected officials from both states asserting their state is the better location.