A day after President Donald Trump issued an executive order barring birthright citizenship to children of undocumented residents, the American Civil Liberties Union of New Hampshire sued in the U.S.

The American Civil Liberties Union of New Hampshire and several immigrant rights organizations have filed a federal lawsuit against President Donald Trump and his administration over his executive order to attempt to change birthright citizenship.

An executive order signed late Monday aims to end birthright citizenship for the children of some immigrants, arguing it’s unconstitutional.