The Islamic State’s deadly plots against Western targets are on the rise, spiking to 28 this year while the group is steadily expanding its supporter base in the U.S., according to a “Terror Threat Snapshot” circulated by Rep. Michael T. McCaul, chairman of the House Committee on Homeland Security. “There is nothing that extremists would like more than to instill fear this weekend when Americans will be celebrating our independence and freedom,” said Mark Wallace, CEO of the Counter Extremism Project and former U.S. ambassador to the United Nations for Management Reform.