In the United States the fact that the US Senate allows for two senators from each State irregardless of the State's population. As an example, the low population of a US State such as North Dakota, has two senators, just as the highly populated State of California.
congress passed laws allowing for free passage between states
How is states Divided into congressional districts
states!
United States Virgin Islands' At-large congressional district's population is 108,612.
Congressional state delegates were to be chosen annually.
State legislatures in each state are responsible for drawing congressional district boundaries. There are 435 congressional districts in the United States.
Basically it was a compromise between the larger states that wanted congressional representation to be based on population, and the smaller states that wanted congressional representation to be equal among the states irrespective of population. The compromise resulted in our current form of government with the members of the House of Representatives being apportioned according to population and the members of the Senate being apportioned at two per state.
It is required that legislative and congressional districts have roughly equal populations. In the United States, congressional seats are redistributed after each decennial census.
It redistributes the Representatives among the States according to population.
Congressional districts are based only on population, not on area.
Congressional republicans.
Do you mean Congressional Black Caucus? If so then this is the block of Congress that are Black and serving in congress for a number of states.