The American Civil Liberties Union (ACLU) and other civil rights groups filed a lawsuit in New Hampshire federal court on Monday, arguing that Pres. Donald Trump's executive order ending birthright citizenship contradicts the US Supreme Court's (SCOTUS) 1898 ruling in United States v. Wong Kim Ark that established birthright citizenship.
On Tuesday, a coalition of 18 Democratic-led states, along with Washington DC and San Francisco, filed a lawsuit in Massachusetts federal court challenging the order as unconstitutional and violating the 14th Amendment's guarantee of birthright citizenship.
Trump signed the order shortly after taking office Monday. It directs federal agencies to stop recognizing citizenship for children born in the US whose parents are in the country unlawfully. It also covers children born to mothers who are in the US temporarily if the father is not a citizen or legal permanent resident.
Liberals may continue to sue Trump in order to defend illegal immigration, but this order is necessary to address the problem of birth tourism. Citizenship loses its value when it's granted to those whose parents aren't in the US with permission of the government.