What is the structure of congress?

House Leadership:

Majority Party

Speaker of the House

Majority Leader

Assistant Majority Leader

Majority Whip

Minority Party

Minority Leader

Assistant Minority Leader

Minority Whip Senate Leadership

President of the Senate is the Vice President of U.S.

President Pro Tempore--Senator of the Majority Party with Seniority

Majority Leadership

Senate Majority Leader

Assistant Senate Majority Leader

Senate Majority Whip

Minority Leadership

Senate Minority Leader

Assistant Senate Minority Leader

Senate Minority Whip