Sounds like a national security issue.
But because they just want to relocate the mining farm, they may still be in the US. The first reason why they came to the US was because there was a crackdown in China during that time. Now that China seems to loosen its belt and even approve the ETFs in Hong Kong, I think the miners will likely be going back to China.
And now that with the timing that US is strongly against to what China is doing from its neighbor countries, this is really gonna take that hot issue to the next level.
But if the mining firm is allowed to relocate elsewhere so that they won't be a security threat to the government then, that's what the government just want them to do.
It's not about cracking them for the second time around but also needs to consider the situation of the military and their operation's location.