Freddie Mac May Face SEC Civil Action  LOS ANGELES (Reuters) - Freddie Mac &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=FRE.N target=/stocks/quickinfo/fullquote"&gt;FRE.N&lt;/A&gt;, the No. 2 U.S.  mortgage finance company, on Wednesday said it may face civil  action from the U.S. Securities and Exchange Commission for  possible violations of securities laws.