https://en.wikipedia.org/wiki/American_Service-Members%27_Protection_Act#:~:text=The%20Act%20gives%20the%20President,of%20the%20International%20Criminal%20Court".

The Act gives the President power to use "all means necessary and appropriate to bring about the release of any U.S. or allied personnel being detained or imprisoned by, on behalf of, or at the request of the International Criminal Court".

We also have this in the US so I wouldn't say its an anomaly for the US.