The process of apportioning Representatives is governed by the 14th Amendment to the Constitution, which was ratified in 1868. The 14th Amendment requires that Representatives be apportioned among the states "according to their respective numbers." This means that states with larger populations will have more Representatives than states with smaller populations.
The total number of Representatives in the House of Representatives is set at 435. This number was established by the Reapportionment Act of 1929, and it has not changed since then. As a result, as the population of the United States has grown, states with greater population growth have gained Representatives while states with slower population growth have lost Representatives.
For example, California is the most populous state in the United States, and it has the largest number of Representatives in the House of Representatives, currently 53. By contrast, Wyoming is the least populous state in the United States, and it has only one Representative in the House of Representatives.
The apportionment of Representatives in the House of Representatives is a complex process, and it can be controversial. This is because the apportionment of Representatives can have a significant impact on the balance of power in the House of Representatives and on the policies that are enacted by the federal government.