How illegals vote without voting

Democrats are furious that the next census is going to ask people about their immigration status.

What many people don't realize is that currently the US uses the entire population, including illegals, to define the Congressional map. Hence in places with lots of illegals like California the votes of citizens are amplified by the number of illegals in the area.

If a Congressional district has say 100 voters and no illegals it takes 51 voters to elect someone from that district.  However is a district has 100 voters and 20 of them are illegals then only 41 voters are needed to elect someone to Congress. Which means that the votes of people in that second district are worth 5/4 more than the votes of the voters in the first district.

For example if the US used only legal residents as the basis for allocating seats in the House California would lose 6 seats.

This is similar to another Democrat innovation where slaves were counted as partially human when determining congressional representation.