Republicans in Congress are trying to reshape election maps by excluding noncitizens

Republican Sen. Bill Hagerty of Tennessee speaks about the Senate version of the Equal Representation Act during a January press conference in Washington, D.C. The bill is one of at least a dozen GOP proposals to exclude some or all non-U.S. citizens from a special census count that the 14th Amendment says must include the "whole number of persons in each state." (Mariam Zuhaib/AP)

A growing number of Republican lawmakers are making a renewed push for an unprecedented change to the country's election maps.

Their proposals call for excluding millions of non-U.S. citizens from the census results that determine each state's share of House seats and Electoral College votes.