This article was originally published by The Financial Times and is now available on ft.com.

Let’s hope Congress does not flinch as it begins the debate about immigration reform because the future is passing through security – in the wrong direction. It leaves the United States on every departing airplane carrying a foreign born student who has graduated from an American university with an advanced degree in the sciences, technology, engineering and math. The majority of these people want to stay in the United States but because of existing immigration laws, they have no choice but to leave.

In Silicon Valley, which has always been blind to any attribute other than ability, everyone knows that the remarkable achievements of the foreign born have led to the formation of companies such as Google, Intel, Sun Microsystems, nVidia, Yahoo! PayPal and scores of others that are less well known. Of the last eleven early stage companies that have allied themselves with Sequoia Capital, seven have had immigrants among their founding lineup. This is not a sudden or recent phenomenon; it has been the leitmotif of our business since the 1970s. However, the number of startups would be even higher if we weren’t ejecting foreign-born students and if we welcomed their contemporaries who have been educated overseas. Today, it is impossible to satisfy Silicon Valley’s appetite for engineers and scientists with people born in America.