Wilmington (United States) (AFP) – Hunter Biden, the son of US President-elect Joe Biden and a frequent target of Republican attacks, said Wednesday he was under federal investigation about his taxes. The revelation about the probe included no details, but it promises to rekindle Republican rage about the Biden family, including Hunter Biden’s business dealings and the elder Biden’s anti-corruption push in Ukraine when he was US vice president. “I learned yesterday for the first time that the US Attorney’s Office in Delaware advised my legal counsel, also yesterday, that they are investigating…