Cali Drug Kingpin Faces U.S. Court in Chains &lt;p&gt;&lt;/p&gt;&lt;p&gt; By Michael Christie&lt;/p&gt;&lt;p&gt; MIAMI (Reuters) - The most powerful drug lord everextradited by Colombia appeared before a U.S. judge on Monday,and his lawyer said he would fight U.S. charges that he ran hismultibillion-dollar business from a Colombian jail cell.&lt;/p&gt;