(Reuters) – Mexico’s President Andres Manuel Lopez Obrador said on Monday he gave a letter to U.S. President Joe Biden where he defended Julian Assange’s innocence and renewed a previous offer of asylum to the WikiLeaks founder. The United Kingdom last month approved Assange’s extradition to the United States to face criminal charges relating to WikiLeaks’ release of confidential U.S. military records and diplomatic cables. “I left a letter to the president about Assange, explaining that he did not commit any serious crime, did not cause anyone’s death, did not violate any human rights and tha…