Maybe it is a smart “it takes one to know one” move, but Obama campaign chief Jim Messina’s decision to help British conservative Prime Minister David Cameron win reelection has outraged liberals on both sides of the Atlantic.

“Political consulting isn’t a profession known for its demanding ethical standards. But no matter how flexible your relationship to the truth or how sleazy your ads, there is one line you aren’t supposed to cross — going to work for the other side. The Tories aren’t the Texas Republican Party. But they are the other side. I hope the Democrats who consider hiring him in 2016 understand that,” wrote Daily Beast special correspondent Michael Tomasky, who is also editor of Democracy: A Journal of Ideas.