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lobbyist
National Rifle Association
interest group
A lobbyist
To eat banana pudding.
Protests
Lobbyists are paid while interest groups aren't
lobbyist or political action committee
Special interest lobbyist influence congressmen by providing them information. Interest groups are specialist on the topic they are interested in and do a lot of research on that topic. Congressmen are generalist and rely on interest groups to give them information on important topics so they are more informed. Each interest group wants to inform the congressmen on their view of the data they have collected.
by filing lawsuits
Today a lobbyist often writes a bill and then takes it to a congressperson that will sponsor it. They are also working and in/out congressional offices speaking with members.
Representatives.. I think. That or Senators.