"We're working with him and his craft to make sure he can make the trip safely, both on his way to the US and back," Kirby told CNN.
Earlier it was reported that the visit of Ukrainian President Volodymyr Zelensky to the United States came as a shock to many high-ranking US officials and lawmakers.
Deputy Foreign Minister of Poland Marcin Przydacz said that the Polish authorities agreed with the Ukrainian partners not to make public the details of the visit of Ukrainian leader Volodymyr Zelensky to the United States.
US President Joe Biden noted that he expects to discuss a wide range of topics with Ukrainian leader Volodymyr Zelensky during his visit to Washington.