First, you said a fetus breathes just like you and I do. It does not. Unless you breath by absorbing oxygen from blood via an umbilical cord. Attached to a placenta that you have sitting around. Do you??? If so, please attach pics of yourself as proof.
Come on, get a biology textbook! 'Coughing' isn't the same as breathing in the womb. How does the oxygen get in there? Scuba gear???
You sound as ignorant of human biology as your presidential candidate sounds about the constitution!
Second, it's not about 'kill anybody anytime'. There is nothing in the constitution to either give the federal government the power to outlaw abortion or to say states can't outlaw abortion. That is why roe v. wade was flawed. Your personal wishes do not have the power to override the constitution of the US when you feel like it.
Outlawing abortion based on one of the most tenuous 5th amendment arguments ever just makes the constitution a joke. I'd say it makes the constitution party a joke, too, but they've already done that with their presidential nominee.
When I cough air comes out of my mouth. When I laugh, air comes out of my mouth. The same in the womb. The government protects elders, adults, kids (yes, even the unborn ones). The government's first priority is to protect the people, not kill them.