The American Farm Bureau Federation
single issue interest group
professional
A public interest group
An example sentence using "interest group" in it is: Mothers Against Drunk Driving is both a cause and an interest group.
economic interest group.
A special interest group
The American Farm Bureau Federation
The National Organization for Women is an example of an interest group. You could also refer to the organization as a lobbying group, or an advocacy group.
The American Farm Bureau Federation
Meeting with representatives
Meeting with representatives
professional interest group.