KYIV. May 12 (Interfax-Ukraine) – Former Prosecutor General Viktor Shokhin has appealed to Ukrainian President Volodymyr Zelensky as the guarantor of the Constitution with a request to ensure the response of law enforcement agencies to allegations of unlawful acts by former U.S. Vice President Joseph Biden. At the Interfax-Ukraine agency's press conference on Tuesday, Shokin's lawyer Oleksandr Teleshetsky noted that the State Bureau of Investigations (SBI) and the Prosecutor General's Office (PGO) have not complied with a number of court decisions on the registration and investigation of the crimes that Shokin alleges. Teleshetsky said more than three months passed after...