How can in interest group put pressure on Congress and Bureaucrats in order to have their policies enacted?

Interest groups can put pressure on Congress and Bureaucrats in order to have their policies enacted by monetary and sanction lobbying,

Explanation:

Lobbying is the term used for the corrupt practice of using the influence of outside of the government to influence the policies of the government to suit certain vested interests.

These lobbying groups make sure to give certain monetary or fiscal benefits to the people involved in the decision making process so as to get the laws passed in their favor.

This is an illegal practice but unfortunately a rather common occurrence in the country.