A week after filming began, Pamela and the girls flew out to LA to give Billy moral support. The show was a success, and just before Christmas 1990, Warner signed him for a further two years for various projects, including more 'Head of the Class'.

 Soon after, though, the series was suddenly scrapped. The children in the show were getting to old to play schoolkids. The same team, however, were given a new show to produce: Billy, based roughly on the film Green Card. Billy played the same character as with Head of the Class. The first thirteen episodes of 'Billy' were screened on ABC at prime time 9:30pm, starting at the end of January 1992.

Pamela won her green card in the Immigration department's lottery, which meant Billy would be eligible for one too. The couple were decided - they would stay in the USA. They bought a house in the Hollywood Hills, overlooking Universal Studios, for around a £1m.

 The show 'Billy', however received bad reviews, but mostly on the writing, not Billy's performances. The thirteen episodes screened were to be the last. Late in 1992, Billy was offered a cameo role in the movie Indecent Proposal which starred Demi Moore, Woody Harrelson and Robert Redford. It looked as if Billy had achieved his old ambition to become famous in America.

 In 1993, he came back to Glasgow to film Down Among The Big Boys, written by his old writer friend, Peter McDougall. Billy was realising, that despite all his experiences with his home town, he was inexorably drawn to the place. He was back again for his mother's funeral later.