March 15(RNS)--Indiana Gov. Frank O'Bannon signed legislation Tuesday that permits government entities, including schools, to post the TenCommandments in their buildings along with other historical documents.

O'Bannon, a Democrat, said a new monument will be erected on thegrounds of the Statehouse this summer that will feature thecommandments, the Bill of Rights and the preamble to the U.S.Constitution.

The Indiana Civil Liberties Union argues the law, which takes effectJuly 1, violates the constitutional separation of church and state. Itis likely to sue shortly after the monument is in place, the AssociatedPress reported.

"Obviously we will have an obligation to get involved in litigation,and if the court rules we are right and the Legislature was wrong, it'sgoing to cost the taxpayer an awful lot of money," said John Krull,executive director of the group.

He recommends that schools and governments hold off on displayingthe commandments in their buildings.

But O'Bannon said in a statement that he believes the law isconstitutional.

"For more than three decades, a monument inscribed with the TenCommandments stood on the Statehouse lawn as a reminder of some of ournation's core values," he said. "Soon those words will stand alongsidethe abiding principles of our form of government, especially itsprotections of individual rights."

The old monument, erected in 1958, was removed in 1991 after it wasthe subject of vandalism.