Racial, gender, and religious composition of the United States.

The current racial, gender, and religious composition of the United States.
How these demographics are expected to change in coming decades.
The racial, gender, and religious composition of the United States Congress.
Compare the demographics of the United States population and the United States Congress by summarizing any similarities and/or differences.
What are the potential consequences of the demographic composition of Congress not matching the demographic composition of its citizens? In other words, what problems may occur if the makeup of the members of Congress does not match the racial, gender, and religious makeup of the citizens?