It's going to be pretty tough for Nigella Lawson to shoot another season of The Taste if she can't be a judge on the show. The international cooking star was recently banned from entering the US because of her previous admissions under oath of cocaine and pot use. It's interesting that she was banned when she tried to enter the country on Sunday since she was never convicted of a crime in England. Scotland Yard decided to not even press charges against her. The ban seems to be simply because of her admission. There are a ton of people who have admitted to using drugs that are still allowed to enter the US. Generally you have to be convicted of a crime and be trying to enter the US on a work visa. The news, which was first reported by The Daily Mail seemed to indicate she was traveling to the US for a vacation rather than work.
With the case of Justin Bieber, he has a green card so he gets a little more leeway when it comes to drug charges and arrests and even convictions. There has been no word from Nigella about the incident except for a mystery Tweet that said she was going offline for awhile but would be back.