According to individuals define themselves in relation to others based on a "self-identity" or "social identity" factor and form binding relationships with people who categorize themselves similarly.

According to social identity theory, individuals define themselves in relation to others based on a "self-identity" or "social identity" factor and form binding relationships with people who categorize themselves similarly.

Explanation:

The theory of social identity, proposed by Henri Tajfel and John Turner, aims to explain how an individual defines their position in society. The objective of this theory is to analyze and understand  the  processes by  which  people  classify themselves into social categories.

Social identification allows individuals to behave in a similar way to other members of the same group. The individual characteristics of a person and her/his relationships play a significant role in shaping values, beliefs, and behavior. For instance, if a person is very conservative, he or she will share these beliefs with people with similar interests and behavior. According to the theories of social identity and self‐categorization, this behavior will highly influence another person's self-identity within a group.

this headline suggests that midterm congressional   elections are at the corner and trump administration wants to activate his base by vowing to clamp down on immigrants and immigration as trump had said during his election campaign around two years ago. when a baby is born in usa, the baby becomes citizen of usa for 85 years and trump wants to end this rule of birthright citizenship to control illegal immigration and this what he said in an interview""we’re the only country in the world where a person comes in and has a baby, and the baby is essentially a citizen of the united states for 85 years, with all of those benefits,” "