I read this quotation from economist Adam Smith in our U.S. History text:

According to the system of natural liberty, the sovereign has only three duties to attend to … first, the duty of protecting the society from the violence and invasion of other independent societies; secondly, the duty of protecting, so far as possible, every member of the society from the injustice or oppression of every other member of it, or the duty of establishing an exact administration of justice, and thirdly, the duty of erecting and maintaining certain public works and certain public institutions, which it can never be for the interest of any individual, or small number of individuals, to erect and maintain…
The Wealth of Nations, Book IV, Chapter IX

So which presidential candidate is more likely to protect our society from violence and invasion, protect members of our society (including unborn babies) from injustice and oppression, and maintain the public works and institutions that are worth maintaining?