My Open Letter on Immigration has been published in German in the Financial Times Deutschland. The letter will be officially released shortly, in the meantime Brad DeLong, Greg Mankiw and Vernon Smith have been joined as signatories by a number of other prominent economists including Franklin M. Fisher (MIT) , Ed Glaeser (Harvard), Roger H. Gordon (U.C. San Diego) and many others. I would be delighted to have further signatories from economists and other social scientists. You can sign by sending an email with your name and affiliation to [email protected]. Thanks!