One of the more self-defeating aspects of this nation’s immigration policy is its insistence on denying work visas to thousands of the world’s most sought-after doctors, scientists, engineers and technical specialists, including those finishing their degrees at American universities... Entangled in the broader debate about immigration, the skilled-worker visa problem has been neglected for too long. Tighter immigration curbs imposed after the terrorist attacks of 2001 may have been an understandable reaction at the time. But there’s no excuse for the current logjams...a legislative fix is relatively simple: increase the number of visas. And while Congress is at it, it should also raise the woefully inadequate annual cap on green cards... Foreign-born entrepreneurs were among the founders of Sun Microsystems Inc., Intel Corp., Google Inc. and other leading firms. To educate the next generation of them in America, only to export them... is foolish in the extreme.