Settlers killed US citizen Sayf Musallet. Will there be justice?

Sayfollah Musallet, a Palestinian American, was killed by Israeli settlers in the occupied West Bank on July 11, just days before his 21st birthday. His death is one of nearly 1,000 killings involving settlers this year, and his US citizenship has helped draw rare calls for a US investigation. Could this case shift how Washington responds to settler violence in the occupied West Bank?