A New York Times/CBS News poll that came out this week finds Americans are more concerned about terrorist attacks than at any time since 9/11. And, among Republican voters, Trump is the beneficiary of these concerns. The latest national polls have him at about 30 percent, twice his nearest competitors: Ted Cruz, Ben Carson, and Marco Rubio. That has the Republican establishment concerned. The Washington Post reported today that some leading Republicans met to discuss the serious possibility of a brokered convention next July.