Four Americans allegedly killed by Israeli forces, why isn't the U.S. investigating?

The Biden administration has urged Israel to conduct credible, transparent investigations into the Americans' deaths, so far Israel has not prosecuted anyone. We hear from families of those killed, and a member of congress, who think the U.S. Justice Department should be doing more.

Four Americans allegedly killed by Israeli forces, why isn't the U.S. investigating?
Hanan Khdour, 47, stands beside the grave of her son Mohammed Khdour in Bidu, Palestine on September 19.

The Biden administration has urged Israel to conduct credible, transparent investigations into the Americans' deaths, so far Israel has not prosecuted anyone. We hear from families of those killed, and a member of congress, who think the U.S. Justice Department should be doing more.