A source who would know points out to me:

Iain Murray has a post about a DHS proposal to require British citizens of Pakistani descent to get visas before coming to the U.S. It’s not true. The New York Times article which first “broke” this “story” is flat-out wrong. See, for example: U.S. officials emphatically deny, however, that one way they might try to tighten the visa system was to specifically restrict the granting of U.S. visas to Britons of Pakistani or any other ethnic group. “We reject any suggestion of ethnic profiling,” Homeland Security spokesman Russ Knocke told NEWSWEEK. Knocke was commenting on a New York Times report suggesting that Britons of Pakistani ancestry might be singled out. Knocke insisted that U.S. authorities would never use ethnic, religious or country-of-origin profiling as a method of selecting travelers from waiver countries for added scrutiny. He said that the U.S., however, would continue to use both “intelligence” and the surveillance of visitors’ pretravel behavior to try to identify suspicious persons and subject them to added U.S. government examination.and Home Secretary John Reid met Michael Chertoff, the US homeland security secretary, last month when, it is claimed, the issue of restricting entry for certain Britons was discussed. Both the British and US governments have denied the issue was mentioned at the meeting.