On what basis might a reasonable person subscribe to the following? Why especially might a Christian do so? How pragmatic is the following "in the here and now"?

We seek the common good. We believe in the sanctity of human life, the necessity of social justice, our responsibility to care for the environment, and the promotion of a peaceful world. We cherish individual rights and separation of government powers, and we recognize the need for social support and community cohesion. We seek to bridge the partisan political divide with honest dialogue.
Public policies should advance these imperatives:​
We must build a culture and enact laws that uphold the equal and inviolable dignity and rights of every human being from conception to natural death.
We have an obligation to care for our neighbor, and especially to defend those who are most vulnerable. Ensuring that every person has access to food, shelter, education, and healthcare is an achievable goal.
We believe that family, local communities, and voluntary associations are the first guarantors of human dignity. National institutions and policies should support, not supplant, them.
We must share and protect natural resources and the environment, as held in trust for the benefit of all.
We believe that force should only be used as a last resort for addressing conflict at home and throughout the world. (July 14, 2017)