Yusuf Islam banned from US

I'm sure I'm not the only person wondering why the US has banned Yusuf Islam from entering their country. He is apparently on one of their "watch lists" and was denied entry on unspecified "national security" grounds.

Of course, I'm sure some will say that the probable reason is Yusuf's supposed support for Hamas, for which he has been banned from entering Israel. Some British charities are known for supporting schools in Palestine, some of which are associated with Hamas, but its chairman of trustees, Ibrahim Hewitt, has said:

Hamas is an ideology as much as an organisation. We deal with people whether they are Hamas or whether they are Fatah. Palestinian society is riven by factions but we don't look at that, we look at it on the basis of need.

The UK Charity Commission has investigated Interpal twice (in 1996 and 2003), but last September abandoned its investigation, saying that no evidence had been provided by the US government to substantiate its accusations. One can perhaps understand Israel barring him from entering, but for the US to do this makes no sense whatsoever, and suggests that they are taking their advice from people whose sympathies are as much with Israel as with the US.