This is sort of a classic example of a slippery slope, FWIW. As soon as you deny anybody due process, the category of people that applies to will just constantly expand.
Now, there's basically nothing stopping immigration officials from immediately deporting anybody they want, citizen, non-citizen, illegal or legal immigrant.
What nonsense. We have the courts. There must be a valid determination made that a person entered illegally for expedited deportation to apply. Due process applies to that determination - if it is not made correctly then sue. But more importantly why on earth would it not be made correctly? If you can’t prove that you’re a US citizen then something is very wrong.
Are you arguing about the way it should be or making a statement about the way things currently are?