If we grant (over my dead body) the fetus personhood, we get into all kinds of mares' nests of law.

The complications over taxation and inheritance are amusingly complex, as when a fetus survives maternal death only to then die shortly thereafter, resulting in double inheritance tax.

But here I want to consider fetus-persons and the laws of trespass.

It would seem to me that, of all kinds of property, the property of one's own body is absolute.

Even in jail, the body remains vigorously protected by law.

What then if a body is invaded by a fetus-person without the consent of the owner?

Under property law, this constitutes trespass--more specifically, the forms of trespass known as assault and battery.

Thus, said fetus-person is guilty under both criminal and tort law.

It thus follows that the authorities must enforce the laws of property by expelling the trespasser.

In other words, the defense of a person's property is the obligation of police departments, with the backing of the courts.