A spokeswoman for Donald Trump has blamed Barack Obama and Hillary Clinton for the 2004 killing of U.S. Army Capt. Humayun Khan in Iraq — even though the death occurred more than four years before Obama became president. Trump has been in a public fight with Khan's parents after Khan's father criticized the Republican nominee at last week's Democratic convention. In an interview with CNN's Wolf Blitzer Tuesday evening, Katrina Pierson said, "It was under Barack Obama and Hillary Clinton that changed the rules of engagements that probably cost his life." Obama was a state senator in Illinois in 2004. Clinton was a senator representing New York. She voted in favor of the Iraq War in 2002.