The champion of Donald Trump’s “America First” agenda, who was invited to speak at the National Front party congress in northern France by Marine Le Pen, spoke only about her 28-year old niece at their joint press conference. “She is not simply a rising star on the right in France. She’s one of the most impressive people in the entire world,” Bannon, an American nationalist who ran the right-wing Breitbart News, told reporters, without mentioning his host Marine Le Pen. Bannon met Marion, who temporarily withdrew from politics after her aunt’s presidential election defeat last May, at the CPAC conservative...