Trump was confused. He conflated, as Napolitano had, Section 702 with the broader FISA law, which governs a vast assortment of surveillance practices. Trump and his allies were angered by FISA warrants, signed and approved three times by three judges, that had been issued to surveil the former Trump campaign aide Carter Page. But Section 702 was a separate and valuable classified program that could primarily target foreigners overseas, when they were suspected of plotting to kill Americans or of helping to support terror cells.