david berkowitz, i believe his name is, his latest works. >> host: david berkowitz? sure who is referring to there, but when it comes to the border, is that something that you think about or write about? >> guest: that's a political question that i haven't particularly written about. having worked in the united states government, i know that i took an oath to protect the united states of america. so i believe in putting the national interest first. we can have discussions about what exactly that means. but in other words, this is a question butds american national interest and americann security. that's as far as i have gotten. >> host: the last two callers have mentioned borders, manuel and then add talked about the fact that open borders -- ed your quds force qubits concern, the communists, it's a good thing. anything there? >> guest: not particularly. >> host: craig in tulsa. >> caller: thank you. i appreciate c-span and i appreciate, command mary eberstadt for the work she is doing. it's- outstanding. i just want to speak about, there's people calling in and they