 National security experts say they're worried about the heated political debate following the assassination attempt on the former president. That includes comments made by J.D. Vance, who is said to be on Mr. Trump's shortlist of possible running mates. The Ohio senator has blamed Democrats for the shooting. It's extremely irresponsible. First of all, he's asserting that he knows the motive of the shooter. And it's now two days later and we still don't know the motive.