"According to liberals, you can't joke, there's no lighthearted banter. One cannot engage in any kind of traditional stereotypical humor because leftists cannot laugh at themselves. As I say, there's not much laughter in liberalism anyway. And they have all of these politically correct barriers up here."

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I think there's no question that the barriers, the fences and in certain urban areas, the walls, have had an important effect in terms of increasing the manageability and the security of the border. But in fact as Secretary of Homeland Security General John Kelly acknowledged at his confirmation hearing, walls and barriers alone are insufficient to insure security.

— Alan Bersin