This history reflects the more basic budget math that eludes most static thinking commentators, especially the pie chart lady Ruth Marcus at the Washington Post. (Pie charts of the budget reflect the most static thinking).
The voters know that any Republican that buys into static analysis can, during budget negotiations, lose sight of the basic purpose of supply-side tax cuts.
Currently, mobile caravans are subject to VAT and static caravans have been exempt since the 1970s, but the chancellor unveiled the new proposal in his Budget in March.