ELLWOOD CITY, Pa. (AP) — Republicans are increasingly focused on President Joe Biden’s brother, Jim Biden, as they dig for evidence that could be used for impeachment proceedings. They haven’t turned up any proof of wrongdoing by the president. However, they recently subpoenaed Jim Biden and others as part of their investigations. Jim Biden’s business ventures, some of which have ended with debts and acrimony, have shadowed his brother’s political career for decades. Most recently, Jim Biden’s work with a failed healthcare startup called Americore has faced fresh scrutiny from Republicans. His lawyer says, “Jim Biden has never involved his brother in his business dealings.”