Bicameral structure of congress in the US is divided into two: the senate and the House of Representatives. In this system, each state is allowed to have two senators and the House of Representatives will depend on the proportion of the state population and the representatives for each state. unicameral legislature might be bias and can cause monopoly. Having two houses would mean having a sense of stability because there is a group that checks and balances the system. Bicameral congress also prevents too much power of a certain group.