New York state is leading a group of 17 states, seven cities and the U.S. Conference of Mayors in a lawsuit against the Census Bureau and Commerce Department to try to remove a new citizenship question from the 2020 Census questionnaire. It comes more than a week after California filed a similar lawsuit in San Francisco federal court against Commerce Secretary Wilbur Ross and Census Bureau officials.

The states joining New York State Attorney General Eric Schneiderman's lawsuit filed Tuesday in Manhattan federal court are: Connecticut, Delaware, Illinois, Iowa, Maryland, Massachusetts, Minnesota, New Jersey, New Mexico, North Carolina, Oregon, Pennsylvania, Rhode Island, Vermont, Virginia, Washington. The cities are: Washington, D.C., Chicago, New York, Philadelphia, Providence, Seattle, and San Francisco, plus the United States Conference of Mayors, a bipartisan group.

The census has not asked all U.S. households about citizenship since 1950. The Justice Department requested the question be added back to the questionnaire so it can enforce the Voting Rights Act with a better count of voting-age citizens. But New York and other states are alleging that adding the question is unconstitutional because it would undermine the government's constitutional responsibility of counting every person living in the U.S. every 10 years.

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