1) Every illegal immigrant in the US will fill out a piece of paperwork giving their name, DOB, etc.
2) Upon filling out the paperwork, they will be automatically enrolled in the current line to become a US citizen, and they will be granted permanent legal status until they become US citizens (providing they commit no serious felonies)
3) There will be no new citizenship line created; the current illegals will be sent to the back of the current line to become a US citizen. If this line needs to be sped up, it will be sped up. However, the illegals do not need to go back to their home country or anything; they just need to fill out a piece of paperwork.
4) If the INS finds them and finds out they haven't filled out the paperwork, they will be given the paperwork and instructed to fill it out. No one will be deported for filling out the paperwork.