what is a public policy?

Answer 1

1.A set of action guidelines or rules that results from the actions or lack of actions of governmental entities.
www.cdc.gov/genomics/gtesting/ACCE/FBR/CF/CFGlossary2.htm

2.Related to the social or legislative ramifications of government policies. The corollary glossary term "political aspects" is customarily applied to the process of arriving at those policies.
lib.ucr.edu/depts/acquisitions/YBP%20NSP%20GLOSSARY%20EXTERNAL%20revised6-02.php

3.Is whatever governments choose to do or not to do (Thomas Dye 1992: 2). Such a definition covers government action, inaction, decisions and non-decisions as it implies a very deliberate choice between alternatives (see Hall and Jenkins 1995).
www.stile.coventry.ac.uk/cbs/staff/beech/BOTM/Glossary.htm

4.According to Thomas A. Birkland's book An Introduction to the Policy Process, there is a "lack of a consensus definition of public policy. Thomas Dye argues that this search for a definition of public policy can degenerate into a word game." (p. 19)
en.wikipedia.org/wiki/Public_policy

Answer 2

This means; The same rule applies for everybody.