Full path to citizenship is for those who 'were brought as kids/infants' i.e. who had no say in how they came into the country. If they are still minors and need their parents, then some 'form of stay' for their parents.
If you cross the border illegally as an adult and barring any special circumstances, you will most likely be deported. It would also be difficult to get a professional job since a lot of companies participate in the eVerify program.