The population of illegal aliens in the US corresponds to about 20 congressional seats, which means that states that states such as California get additional representation in congress and the electoral college. Rep. Mo Brooks and the state of Alabama are suing in federal court to prevent apportionment based on counting illegal aliens.
Currently the federal rules count all residents, even if they are here illegally. Foreign tourists and travelers are not counted. So are US citizens living outside the US unless they are employed by the federal government.
It is not clear whether the court case be successful. Should congress change federal law to prohibit the counting of illegal aliens for the purpose of congressional apportionment? What about legal non-citizen residents?
What about US citizens living overseas, should they be counted?