The West Australian | Prime Minister Scott Morrison vows to lock in GST changes with laws The West Australian Prime Minister Scott Morrison will today vow to make his Government's proposed GST changes law, declaring it is time to “lock them in”. Ahead of arriving in Perth today, Mr Morrison told The West Australian that legislation would be introduced in ... Morrison promises to 'lock in' GST changes Scott Morrison to sandbag seats with GST overhaul Scott Morrison to shore up support in Western Australia with $9 billion GST overhaul |