Which of the following issues might affect both domestic and foreign policy?

Immigration

Constitutional law

Education

Retirement age

The constitutional law might affect both domestic and foreign policy of a country

Explanation:

The constitutional Law defines the various functions, roles and duties of the state and it also lay down principles for the Government to follow.

It is the law of Federal Government.

Few example of the constitutional law are Freedom of Speech, Right to Protest, Civil Rights, Presidential Powers, abortion rights, racism and discrimination Rights