MEXICO CITY -- A man convicted of spying in the U.S. for the Castro regime has been allowed to return to Cuba after more than a decade in an American prison, and on Monday he &lt;a class=&amp;quot;runtimeTopic&quot; href=&quot;http://www.prensa-latina.cu/index.php?option=com_content&amp;amp;task=view&amp;amp;idioma=1&amp;amp;id=1384591&amp;amp;Itemid=1&quot; target=&quot;_blank&quot;&gt;&lt;strong&gt;began the paperwork&lt;/strong&gt;&lt;/a&gt; to make his homecoming permanent (link in Spanish).