Eliminate the federal income tax and ban it permanently. Also eliminate all estate and inheritance taxes as well as the so called "capital gains" taxes. This is the only way to keep the federal government small and prevent it from controlling and dominating people through its vicious income taxes. Make another amendment banning property taxes.
Eliminate the so called "civil rights" amendments which are used only to badger white Americans.
Add an amendment that explicitly controls immigration.
Add an amendment that allow states to secede from the union if the federal government fails in its behavior toward and obligation to the States.
Overturn Wickard v Filburn.