More than six years after ISIS began its horrific public executions of American hostages, on Wednesday the U.S. government took one huge step toward justice for U.S. citizens. Alexanda Kotey and El Shafee Elsheikh, two ISIS members and former UK citizens, appeared in federal court to face 8 felony counts related to the kidnapping and murder of Americans Jim Foley, Peter Kassig, Kayla Mueller, and Steven Sotloff.