Romney was not wrong about that.
No matter what Trump does, it's going to be close, and the illegal vote -- outside of a number of key states that we don't need and didn't carry -- isn't that big.
I think the only way to change that number is to deport illegals. It may shock us how much that number would change from that one thing accomplished.
Changing our social programs would make another significant change, most people change their thought process when they work and pay taxes.