Former Presidents Barack Obama and Bill Clinton used the Democratic National Convention stage to lay bait that lured Donald Trump into a trap, a CNN analyst said Monday. Harris used her speech to change tactics away from President Joe Biden’s focus on the GOP’s threat to the nation, and instead took aim at Trump for being “an unserious man,” Stephen Collinson wrote. The addresses by the ex-presidents in the nights before Harris closed the convention were designed to goad Trump into proving her point, he wrote. Want more breaking political news? Click for the latest headlines at Raw Story. “Her…