Two recent lawsuits against Cook County Clerk David Orr claim that not issuing marriage licenses to same-sex couples violates the due process and equal protection clauses of the Illinois Constitution. The state’s attorney’s response, expected to be filed later today, will agree with that claim. In an e-mail, spokeswoman Sally Daly wrote: “We believe the plaintiffs are correct in their assertion that the Illinois Constitution upholds marriage equality for same sex couples just as it does for opposite sex couples.” The Illinois Attorney General’s office has also said it plans to file a brief in support of the lawsuits, and Gov. Pat Quinn has voiced his support for gay marriage. The lawsuits were filed late last month by the gay rights group Lambda Legal and the American Civil Liberties Union of Illinois.