SEC May Charge That AIG Lied to Investors  NEW YORK (Reuters) - American International Group Inc.  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=AIG.N target=/stocks/quickinfo/fullquote"&gt;AIG.N&lt;/A&gt;, the world's largest insurer by market value, on Monday  said the U.S. Securities and Exchange Commission may take civil  action against it for issuing "false and misleading" statements  to investors.