Any GOP candidate who promises to overturn the EO is likely to win the nomination AND the general election.
Alas I fear we will not have a candidate in the GOP make such a promise.
Additionally, a PROMISE to overturn by ALL GOP candidates will destroy any and all political benefit the Dims may otherwise derive from this action.
All would then know the duration is but 2 years and their initial registration becomes a trail back to them.
We have to be careful. If we are lucky enough to secure the White House in the next election, it will be the job of the new president to restore the balance of government, not to use the power of the office to create more power.