Cindy McCain says she will never make her tax returns public even if her husband wins the White House and she becomes the first lady. "You know, my husband and I have been married 28 years and we have filed separate tax returns for 28 years. This is a privacy issue. My husband is the candidate," Cindy McCain, wife of Republican presidential nominee-in-waiting John McCain, said in an interview aired on NBC's "Today" on Thursday. Asked if she would release her tax returns if she was first lady, Cindy McCain said: "No." The Arizona senator released his tax return last month, reporting he had a total income of $405,409 in 2007 and paid $84,460 in federal income taxes. He files his return separately from his wife, an heiress to a Phoenix-based beer distributing company whose fortune is in the $100 million range. Sen. McCain is routinely is ranked among the richest lawmakers in Congress, but he and his wife have kept their finances separate throughout their marriage. A prenuptial agreement left much of the family's assets in Cindy McCain's name.