They are trying to grant citizenship to millions of illegal aliens. The 11 million number is shit they pulled out of their ass because the actual number is higher, but the higher the number the harder to sell. Citizenship comes with voting rights.

Message: Come to America and get citizenship, no matter if its legal or not.

Result: Flipping states that are usually red or purple permanently and pissing on Americans who spent their whole lives in the rat race, trying to do the right thing, buying into the "democratic" system, and fracturing an already divided country even more.

Democrats unveil Biden's immigration bill, including an eight-year path to citizenship

The U.S. Citizenship Act of 2021 includes: an eight-year pathway to citizenship for nearly 11 million undocumented immigrants; a shorter process to legal status for agriculture workers and recipients of the Deferred Action for Childhood Arrivals program; and an enforcement plan that includes deploying technology to patrol the border.
Immigration: Biden plan to include eight year path to citizenship