WASHINGTON— U.S. President Joe Biden said on Wednesday he was shocked by the “heinous” assassination of Haitian President Jovenel Moise and wounding of his wife in their home, and administration officials said Washington was to ready help investigate what happened. Moise, 53, was shot dead and his wife Martine left in critical condition after unidentified gunmen opened fire with assault rifles in his private residence overnight, stirring fears of chaos in the impoverished Caribbean nation already reeling from rampant gang violence and facing a constitutional crisis. “We condemn this heinous attack and I am sending my sincere wishes for First Lady Moise’s recovery,” Biden said in a statement. “The United States offers condolences to the people of Haiti and we stand ready to assist as we continue to work for a safe and secure Haiti.” “We need a lot more information but it’s just, it’s very worrisome about the state …