 I'm Stacey Lynn at the White House. According to a new YouGov poll, half of U.S. adults said political violence is a very big problem right now. And 67% feel today's political environment makes these politically motivated attacks more likely. And with looming questions as to how the shooting at Trump's rally could even happen in the first place, only 20% of Americans said they have a lot of confidence in the Secret Service to protect presidential candidates from harm.