Basically the US is saying that it’s the wild west out in space: if you can get there, you can mine your asteroid.

Any asteroid resources obtained in outer space are the property of the entity that obtained such resources

Source: Text of H.R. 1508: Space Resource Exploration and Utilization Act of 2015 (Introduced version) – GovTrack.us

I’m very curious what other countries have to say about this?