 Tonight, the president in Las Vegas, and after Nancy Pelosi's comments, George Clooney's words, and now Congressman Adam Schiff, is Biden now determined to be the nominee? The scare not far from the convention site here, a man taken down by police, what we've learned. The new turn involving security surrounding Donald Trump tonight. ABC News has learned the Secret Service had already increased protection for Trump before that Pennsylvania rally. Because of intelligence, Iran wants to assassinate Trump.