She was charged with "(heading) negotiations between the Netanyahu government and Obama administration over the military aid package, in addition to her work on the Israeli-Palestinian issue.

"[6] Initially planning to return to the State Department after 20 years as a career diplomat, Lempert was asked to stay on for the transition and assembling of a new team in 2017 under Donald Trump.

[7] From June 1, 2017, until December 2018, Lempert served as acting deputy assistant secretary for Egypt and North Africa.

[2] Lempert became the acting assistant secretary of the State Department's Bureau of Near Eastern Affairs on August 31, 2021.

[11] She was sworn in by Vice President Kamala Harris on August 9, 2023,[4] and presented her credentials to King Abdullah II on September 3, 2023.