Idiotic argument, nobody's house is 3.7 million sq miles, nor do 350 million people live in anybody's "house".

So it's inconvenient for you to open your house to anyone?

If my house were like a country, it would be quite convenient and I would indeed open my home to everyone willing to participate in my social contract.

But my home isn’t in any way like a country, so this question isn’t meaningful.

So your logic doesn't apply for your home, for your neighborhood or your city? Does it hold for you state or do you need to become completely independent country?

Huh? My home isn’t a commons and requires no management of a shared resource.

You need a bureaucracy once you have a shared resource, and at that point no one is entitled to the resource more than anyone else.

You don't share it with your wife or kids, roommates,...?

The people who share ownership are entitled to the resource and can decide how someone can join.

The land your home is built on is part of a shared resource: the space available for the community.

If we apply your logic there s nothing wrong with immigrants showing up and colonizing natives - be it in America, Australia, etc - shared resource bro!