Welfare Reform Bill

I was troubled when the noble Baroness, Lady Lister, alleged that the use of EU law was a pretext—I think she said pretext—which means it was a kind of sham. May I take it that the analysis given about the decision of the European Court of Justice was based on legal advice and that what has been said explaining EU law is the Government’s understanding on the basis of EU advice as to what that judgment means and its effect, or is it some kind of political pretext?