https://www.bbc.com/news/world-us-canada-54003527
What are the sanctions?
President Donald Trump issued an executive order in June, which allows the US to block the assets of ICC employees and stop them entering the country.
Addressing reporters on Wednesday, Mr Pompeo said Ms Bensouda and Phakiso Mochochoko, the head of the Jurisdiction, Complementarity and Cooperation Division, were to be sanctioned under this order.
Dismissing the ICC as a "thoroughly broken and corrupted institution", he said those who continued to "materially support those individuals risk exposure to sanctions as well".
The US state department has also restricted the issuance of visas for ICC staff involved in "efforts to investigate US personnel".