Well as someone that bothered to read the article, I can say that it seems to be a lot more complex than "he's a spy". He's not actively employed by the US government, and he didn't spy on the US itself. He spied on Qatar's rivals, some soccer officials, and he tried to influence US policy (aka lobbying which is legal). So the question seems to be whether he broke specific rules related to foreign lobbying, and whether he was allowed to offer his expertise (US cultivated tradecraft) to a foreign country. I'd say it's a coin toss on whether this guy actually sees the inside of a cell.