A housing benefit that saves clergy $800 million a year in taxes has been deemed unconstitutional by a federal judge. Under the law, housing allowances paid as part of clergy salary can be subtracted from their taxable income. Religious freedom advocates fear the ruling could force many churches in poor areas to close.MADISON, Wisconsin - A federal judge in Wisconsin has struck down as unconstitutional a law that gives clergy tax-free housing allowances, in a ruling that could have far-reaching ramifications for religious leaders, who could be facing new taxes which will threaten their ministry. Under the federal law passed...