The Trump administration came to the Supreme Court on Thursday with what it called a “modest” request in its effort to end the constitutional right of birthright citizenship.

THE FACTS: This is not true. About 30 countries, including the U.S., offer unconditional birthright citizenship, according to the CIA World Factbook and the Library of Congress. Birthright citizenship was enshrined in the Constitution after the Civil War to ensure that formerly enslaved people would be citizens.