Yes, if he was being interviewed on Fox news.
He was being interviewed on a Latin station about Latin countries, no shit he was asked questions and expected to know. The interviewer was rightly sticking with these questions because, surprise surprise, Latin America is right next to the US and represents a massive voter and demographic base within the US.
This isn't like asking him about Kyrgyzstani trade agreements. This is shit he should know if he agreed to do an interview for Univision.
This speaks overwhelmingly to the point that people continue to try and make. That Bernie isn't interested in doing anything but repeating his party line over and over and over again.
And the Ron Paul tactic stops working once people see that there is nothing deeper than that.