Answer :

Bills may be introduced in either house of Congress (the Senate of the House of Representatives), and then goes to a committee, which reviews the bill and hears testimonies. 

Answer:

committee for review, discussion, and changes that may be needed

Explanation:

A bill introduced in the House or Senate is sent to a committee for review, discussion, and changes that may be needed. For example, bills dealing with taxation will be given to the Appropriations Committee. Bills affecting veterans may be assigned to the Armed Services Committee.