It is sad to read that Britain, which has recently experienced the largest wave of immigration in its history, plans to discourage foreign students, surely the least troublesome among immigrants (“It Ain’t Broke,” February 19, 2011). If there are worries that student visas are used as an easy way into Britain’s labor market, abuses should be stemmed by appropriate control measures rather than by discouraging foreign students as such, and thus threatening a successful British business. As you report, one foreign-student lobby “guesses” that they contribute some ten-billion pounds a year to Britain’s economy, while another “reckons” that higher education is the country’s seventh-biggest export. It is the government that should be better informed about such numbers before slamming on student visas, which may threaten the inflow of bona fide foreign students. If the most successful among them stay to work in Britain, so much the better for the country.