It is another Ttump master-stroke. There will be more.
Some Trump supporters are casting this as a good defensive move. Why risk a debate mistake when you are ahead.
But this is offense, not defense, with risks of its own, but risks that Trump has more control over. And it has the element of surprise.
Trump will now win easily in Iowa.
There is now the possibility of a Trump landslide in Iowa.
Trump is not TALKING about what he can do. He is DOING.