Having society (a group of unrelated jurors) to pay for the crimes of an individual (however minor you perceive them to be) is not justice.
That's why you got kicked out.
Doesn't stop them from leading a gang over the phone, but that's better than recruiting new members in prison who are probably more violent than someone off the street.
2. Who gets them their immigrant visa?
3. Where do they live while waiting for it?
4. You do realize most countries require immigrant visa applicants not to be convicted felons in their home country?