We need this because we are a nation of laws and punishing legal immigrants who scrupulously adhere to the law is an affront to our notions of fair play. H-1B holders are among the most educated and highest paid people in the country, and are a huge net-positive for the country. There are hundreds of rural counties where they are practically the only doctors who provide care, and there are scads of industries that will be thrown into disarray by turning them away. It’s better to encourage immigration from people who speak the language fluently and can integrate into American society better and practically immediately, than to throw the doors open to poor uneducated people who are mostly here illegally, break dozens of laws everyday merely by being present here illegally, and are likely to remain an underclass for generations irrespective of how hard they work.