How did congress try to limit the influence of interest groups in 2007? why did it do so?

In 2007 Congress tried to limit the influence of interest group by passing stricter laws on the actions that interest groups could use to influence policy because of a number of recent highly publicized scandals. The Senate barred gifts from lobbyists to Congressmen and women, Congress forced lobbying groups to disclose donations given to politicians and groups they controlled, as well as bundled lobbying contributions (when multiple lobbies or lobbyists support a campaign or politician) were more closely scrutinized. The goal was to reign in the influence of lobbyists in Congress.