"To start..." Ah, yes, it's always easy to start, but how do you finish.
I remember the "big, beautiful wall" that Trump was going to build, and have Mexico pay for it. That was a bit of a farce.
Again, the devil is in the details.
Can you define "criminal aliens"? Are you of the belief that ALL undocumented persons are "criminal" because you feel that their method of entering the country was "criminal"?
Do "criminals" have to be convicted of a crime? Or just suspected of having committed one?
Where will you send these criminals? How will you transport them? By plane? Where do they get the aircraft? Who flies it?
A "plan" usually involves more than one sentence.