Prosecutors added charges yesterday against three of six people accused of plotting to kidnap Michigan Gov. Gretchen Whitmer. Adam Fox, Barry Croft Jr & Daniel Harris conspired to use a weapon of mass destruction to blow up a bridge near her 2nd home in Northern Mich. Croft & Harris were also charged w/ possession of an unregistered destructive device. Harris also faces a new charge of possession of an unregistered short-barreled rifle.