It is, but this is still far less severe than denaturalizing a citizen. The executive has pretty much total discretion over which non-citizens they allow into t

It is, but this is still far less severe than denaturalizing a citizen. The executive has pretty much total discretion over which non-citizens they allow into the country. That power isn't anything new, it just wasn't abused like this before. Denaturalization for anything besides fraudulently obtaining citizenship would be a serious change, not just applying existing power in ugly ways.