Stealth Hunter: Biden’s tangled business dealings are becoming hard to ignore

Influence-peddling is Washington's spectator sport' - but now there's an interest in taking a closer look at the president's son

To the political right in America, Joe Biden's son Hunter has been the gift that keeps on giving, with his public struggles with addiction, scandalous private life and tangled business life. To the left, Hunter's travails are dismissed as a Republican political obsession and a talking point for tabloid journalism and internet gossip.

But last week, two witnesses called before a federal grand jury seated in Wilmington, Delaware, which is looking into the tax affairs of the president's son, made the subject harder to avoid.