Freedom From Religion Foundation has several suits going through the courts, some dating back to November 2008 and others filed recently against cities in Florida, Texas and Arkansas.

Brett Harvey, senior counsel for the Alliance Defense Fund, told The Christian Post that his organization vows to fight the legal efforts of FFRF.

"In recent years the Freedom From Religion Foundation has filed several lawsuits challenging the National Day of Prayer and similar public proclamations," said Harvey. "In 2011, the United States Court of Appeals for the 7th Circuit dismissed their lawsuit challenging both the federal law creating the National Day of Prayer and President Obama's prayer proclamation."

Harvey explained that these efforts by the FFRF are continued even after the group loses a court case, using as an example the organization's suit against Arizona Governor Jan Brewer.

"The United States District Court for Arizona threw out their lawsuit against Arizona governor's announcement of the Arizona Day of Prayer," said Harvey. "Despite being thrown out of federal court, in January 2012, Freedom From Religion Foundation again sued Governor Brewer in state court."