Fannie Mae Said Near Deal on Capital  WASHINGTON (Reuters) - Embattled mortgage finance giant  Fannie Mae &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=FNM.N target=/stocks/quickinfo/fullquote"&gt;FNM.N&lt;/A&gt; was close to a deal with regulators late on  Sunday that would force the company to keep billions of dollars  more in cash on hand while it corrects accounting problems, a  source familiar with the negotiations said.