Hunter Biden arrived on Capitol Hill Wednesday to answer questions about whether his father benefited financially from his international business — just days after the GOP’s top witness was arrested and charged with lying to the FBI about the investigation. The development involving ex-FBI informant Alexander Smirnov has is considered by some as the point the case against the president collapsed, as Rep. Eric Swalwell (D-CA) put it. So, it didn’t go well when NBC News reporter Ryan Nobles pressed House Oversight and Reform Committee chair, Rep. James Comer (R-KY), to explain what President Joe…