Byrnes is a diplomat for 26 years. As ambassador to the country she is appointed deputy head of the US mission to Athens.
Previously, he was a permanent representative of the OSCE Mission to the OSCE in Vienna.
During a Senate hearing, Byrnes said the work of the embassy would focus on three areas: it will promote stability through strong institutions, work to strengthen security through partnership, and work to foster prosperity through positive influence. Her predecessor, Jess Bailey, left office in February this year.
