Home News Former Homeland Security Secretary Jeh Johnson discusses mass shootings in U.S. Former Homeland Security Secretary Jeh Johnson discusses mass shootings in U.S. Daily Editor Jun 09, 2022 comments off Tweet on Twitter Share on Facebook Pinterest ar-15 assault rifles elementary school shooting Homeland Security immigration Jeh Johnson mass shootings Mexico president joe biden Robb Elementary School southern border summit of the americas tops supermarket uvalde uvalde texas