June 30, 2015 1:50 pm WATCH: Highlights From Chris Christie's Presidential Announcement New Jersey Gov. Chris Christie opened his 2016 campaign for president Tuesday and, never one to aim small, declared he’s “out to change the world.” US & World Videos 2:08 Travis Kelce calls Taylor Swift his ‘significant other' as they attend Charity Gala Date Night 1:40 Charlie Puth reacts to Taylor Swift's ‘The Tortured Poets Department' name-drop 2:52 Severe weather kills at least 5 as tornadoes rip through Midwest and South 0:48 World Central Kitchen to resume operations in Gaza 8:39 Gina Rodriguez gushes 0ver motherhood with son Charlie