And according to that astrobiologist I mentioned earlier, Jacob Haqq-Misra of the Blue Marble Space Institute of Science:
First, humans who land on Mars relinquish their Earthly citizenship. They are Martians now, not Earthlings. Second, governments, companies and people on Earth cannot interfere with the politics or economics of Mars. That means no coercive trading, no economic meddling, no backdoor deals for goods or services. Third, scientific exploration of Mars can continue as long as it doesn’t interfere with whatever civilisation is developing independently. Fourth, land use on Mar…