Michael D'Antonio: Ivanka and Don Jr. put on a ludicrous show

Amid all the other craziness surrounding Donald Trump's foray onto the world stage this weekend, nothing exceeded the farcical roles assumed by his daughter Ivanka Trump - who is now, like her husband Jared Kushner, a self-styled diplomat with a heavy footprint - and her brother Donald Jr., who reprised his father's racist birtherism, this time with a retweet aimed at Sen. Kamala Harris. (Then, lacking a full measure of the old man's nerve, Jr. suddenly retreated).