investigation into the president s son is being mishandled because of quote preferential treatment that lawyer wrote a letter to a group of bipartisan lawmakers on wednesday, asking them for legal protections if his client brings that information forward hunter biden has previously denied any wrong doing saying quote, i take this matter very seriously. but i am confident that a professional and objective review of these matters will demonstrate that i handled my affairs legally and appropriately. including with the benefit of professional tax advisers. joining me now is nbc news senior investigative producer, sarah fitzpatrick. where does this currently stand? this letter was sent yesterday and the relevant committees have acknowledged that they ve received it our understanding is that the process has started and they are waiting for the whistleblower to be invited to congress the whistleblower is suggesting that specifically, and i think