MADISON, Wis. (AP) — The American Civil Liberties Union has asked a federal judge to issue a preliminary injunction blocking Wisconsin's gay marriage ban while the organization's lawsuit challenging the prohibition continues. The ACLU filed a lawsuit Feb. 3 arguing the ban is unconstitutional. The organization filed a motion Thursday with U.S. District Judge Barbara Crabb seeking a preliminary injunction that would essentially invalidate the ban until the lawsuit is decided. In a brief accompanying the motion the ACLU argued they're entitled to a preliminary injunction because they'll likely win the lawsuit and the ban imposes irreparable harm on same-sex couples. A spokeswoman for the state Justice Department, which is defending the ban, said the agency will respond in court. A hearing has been set for March 27.