They’re 435 seats in Congress whether Illegal Aliens are counted or not, where it makes a difference is in places like California which is a sanctuary state artificially inflating their population versus a state like Florida who is helping ICE with deportations.
In the census California gets extra seats they should not be getting, and Florida gets cheated out of seats they should be getting.
Last census, Florida gained 2 new seats when it should have gotten 4...
Basically blue states are getting a couple of dozen extra seats the should be going to red states.
Yes,the total population is divided by 435 to get the number of citizens per seat/district . That number will cross 1,000,000 in 20 years.