Card-carrying (adjective)

1. Being a member of an organization or group, as evidenced by carrying a membership card.
2. Being a member of an organization or group, as evidenced by having a membership card.

Origin:

The phrase "card-carrying" is derived from the idea that one carries a membership card or identification card as proof of being a member of an organization or group.

Examples:

1. He was a card-carrying member of the political party.
2. She was a card-carrying member of the union.
3. He was a card-carrying member of the club.
4. She was a card-carrying member of the organization.
5. He was a card-carrying member of the society.