What makes you think that on Mars there won't be politics? Once Mars is within reach politics will arrive with the first human settlers.
What the US president believes is not representative for what politicians in general believe. He's somewhat of an exception (fortunately). Unfortunately, he's doing a lot of damage but even if he weren't the problem would largely remain the same.
That's exactly how it'll go. At some point, humans on Mars will become tribal. Then we can watch history repeat from a distance (all the while it is repeating here anyway...)
What the US president believes is not representative for what politicians in general believe. He's somewhat of an exception (fortunately). Unfortunately, he's doing a lot of damage but even if he weren't the problem would largely remain the same.