According to RIA Novosti, he told about this, commenting on the possibility of including Russians convicted in other countries in the list for exchange with Russia.
At the same time, as Kirby noted, the United States does not want to enter into public negotiations.
"However, I can tell you that we are working very hard to ensure that Evan and, of course, Paul return to their families," the White House spokesman said.
According to him, the US administration is considering "various options for action."
Earlier, the White House admitted the possibility of a limited easing of anti-Russian sanctions for the exchange of Americans imprisoned in Russia.
Also, the head of the State Department, Anthony Blinken, said that the United States is in contact with Russia on the issue of prisoners.