The thing is, those three American works are damn good tales, as well as stretching kids to think about contexts that have plenty of contemporary meaning. I agree that there is loads of good literature written by British writers, but the role of teaching up to GCSE is to introduce kids to a love of literature. Gove seems to be once again aping techniques used in Oxbridge cramming schools (upper end, private sector) and the old grammar schools (who modelled themselves on Oxbridge crammers), where a diet of Dickens, Jane Austen and Byron was the only 'proper reading' for examinations.
Sadly, we're allowing once again the fripperies thrown into our paths by politicians and media to distract us from the real, serious need to have a long talk about what education is and how it can be done.