There might be some diplomatic problems with an orbiting asteroid. According to treaty, no country can own anything in space that it didn’t put up there themselves. And, of course, if an error is made nudging it into orbit, it might hit earth like a hundred nuclear bombs, depending on its size.
Yup. And if one nation, or group of nations, has control, dense chunks of it could be aimed at points on Earth that were politically undesirable. Even if it’s mined, the pieces need to be brought to ground, somehow.