I found this on Military.com
"There's a reason the Department of Defense believes China's weather balloon is actually a reconnaissance balloon: The DoD is developing reconnaissance balloons of its own. The Pentagon plans to spend $27.1 million in fiscal year 2023 on balloon-related projects to get its own recon balloons into the stratosphere.
Pictured: A weather balloon. (Lockheed)
It may seem like an idea from the 1960s, but high-altitude balloons 60,000-90,000 feet above the Earth's surface, equipped with machine learning algorithms and solar panels, are a cheap, effective way to watch hypersonic missile testing from America's geopolitical rivals. They can also loiter for much, much longer than any drone. If any of the massive balloons get forced down, they'd just be another weather balloon, which the National Weather Service still uses.
Please do not try to shoot down an NWS weather balloon."