Lake Keowee Real Estate News – Lake Keowee homes for sale – Lake Keowee News – Lake Keowee Waterfront property for sale – Lake Keowee Waterfront Real Estate for Rent – Lake Keowee – But those who do say deduction is vital – Gregory Korte – Designed to boost homeownership, the mortgage interest deduction is one of the most popular provisions of the tax code. But International Revenue Service data show only 25% of tax filers claim it….