Space Station grabs SpaceX Dragon ship

Pass a law that whoever parks their pasty butt on the surface of another planet owns x square meters of it, but they have to land in person and affix a notary.

there has got to be a way to monitize seeding a civilization on mars.

I know you're probably not being serious, but this would stop that: http://en.wikipedia.org/wiki/Outer_Space_Treaty

Yes, it would affect the "pass a law" part of the OP's proposal, but would Mars-bound indiviual colonists, representing only themselves and no nation, be bound by treaties between the dinosaurs of Earth?

I believe the correct response from any future colonists to cries about international treaties would be "Come and stop us."

Treaties can be, and have been, renegotiated.