They are, absolutely. But a govt that keeps telling the media - falsely - that its plans will save £10bn must expect to be challenged on what's happened to that saving when it (partly) changes course. So much dire policymaking on this subject comes from a refusal to speak truthfully to the public.

As others have noted, politicians are never asked about the costs of *cutting* immigration or what that means for growth forecasts & tax revenue. The only people who can change that are ministers, using their platform to change the terms of debate Lab need to recover its faith in rational argument