According to this article, Europeon scientists are on a quest to lay claim to property on Mars.
Mars is a big place... and at some point mankind will live there. My bet is that a society on Mars will eventually chuck all off-planet authority to be in charge of their own destiny (sounds like a sci-fi tea party doesn't it?).
It is so hard-wired into mankind to be 'in control' that when the time comes, it will be a difficult, and maybe, a bloody revolution will occur... followed by generations of Martian citizens gathering on Mars Freedom Day for parades and barbecues.