home affairs
/ˌhəʊm əˈfɛːz/noun
1Originally: the political circumstances prevailing within a particular nation. In later use: matters relating to the domestic administration of a nation, such as law and order, national security, and immigration, as official or governmental concerns. Frequently (with capital initials) in the names of government agencies and offices.
2With possessive adjective. Matters relating to a person's family or household.
Origin
Late 16th century. From home + the plural of affair.