The Freedom From Religion Foundation has filed a federal lawsuit against the Internal Revenue Service over its lax response to church politicking.
The group argues that the tax agency is violating the Constitution by allowing tax-exempt churches and religious organizations to get involved in political campaigns.
The suit points to several examples, including a full page newspaper ad by the Billy Graham Evangelistic Association.
The ad, which showed a photo of Rev. Billy Graham, urged Americans to vote along biblical principles.
The 94-year-old evangelist also met with Republican presidential candidate Mitt Romney in October and promised to do all he could to help him win the election.
The lawsuit argues that the IRS is giving preferential treatment to religious groups over other tax- exempt organizations.