Sean Penn and Rolling Stone are facing a withering barrage of criticism for publishing a rambling account of a jungle-clearing interview with Joaquin "El Chapo" Guzman, the Mexican druglord. Critics focused on the magazine's decision to allow full copy approval to a murderer and drug trafficker, as well as allowing him a platform for his views when he was a wanted criminal.But Penn also earned sweeping ridicule for 11,000 words of often-bizarre prose, in which he makes reference to his own flatulence as a "subtle brume" and expends more column inches discussing his scoop than dissecting Guzman's murderous record.He writes: ''Chapo puts his arm over my shoulder and renews his request that I see him in eight days. 'I'll be saying goodbye now,' he says. At this moment, I expel a minor traveller's flatulence (sorry), and with it, I experience the same chivalry he'd offered when putting Kate [Mexican actress Kate de Castillo] to bed, as he pretends not to notice. We escape its subtle brume."Many in the US questioned whether such a meeting with a wanted fugitive was even legal.Marco Rubio, one of the Republicans standing for his party's nomination for the White House, summed up the interview as "grotesque"."If one of these American actors who have benefited from the greatness of this country, who have made money from our free enterprise system, want to go fawn all over a criminal and a drug trafficker in their interviews they have a constitutional right to do it. I find it grotesque," he said.The article had already been readied for publication before Guzman was arrested on Friday last week.Some accounts suggest law enforcement agencies were aware of contacts between Del Castillo, who set up Penn's meetings, and Guzman, possibly helping lead marines to his hideaway.Either way, Mexican authorities say they want to interview Penn over the interview. ..