Some Trump appointees become critical figures for Biden

President Biden ran as a cure to former President Trump, but he’s relying on a handful of officials appointed under the prior administration and serving in critical governing roles who are tackling everything from hostage negotiations to the Kremlin.

One example is John Sullivan, a former deputy secretary of State who served under Rex Tillerson. He is in charge of running a skeleton-staffed embassy in Moscow as the U.S. ambassador to Russia.