A nice effort. Ambassador Gilbert was confirmed by the US Senate on the 12th of December in a voice vote. he is fortunate to have had the nomination confirmed before the control of the Senate changed. He would have still been confirmed, but a vote may not have occurred for many more months.
Personally I think it is silly the US Senate still confirms Ambassadors. In the 1700s and 1800s Ambassadors were very powerful positions as they could not communicate with their home Governments quickly, and would often negotiate major issues of behalf of their countries. Now their positions are much less important. They are still important positions, but they do not set policy in any way.