If a lawsuit seeking to ban the national motto "In God We Trust" from the U.S. Capitol Visitor's Center is successful, some lawmakers say America's foundations will crumble.

The Freedom from Religion Foundation, an atheist organization, filed suit July 14 to block the motto from being engraved on the building.

Rep. Randy Forbes, R-Va., was instrumental in getting the motto added to the visitor's center after it was omitted from the original design.

If the lawsuit succeeds, Forbes says the Declaration of Independence could be ruled unconstitutional because the rights of life, liberty and the pursuit of happiness are attributed to the Creator.

"This group wants us to say that was a lie," Forbes said. "If that was a lie, then the rights also were a lie because those rights came from the Creator.

"If you take away the Creator then you have to ask this question, 'Where do the rights come from?'  If they came from government, then government can give them to you and government can take them away," he added.

Congress overwhelmingly approved the engraving this month.