We already have a huge incarceration rate. Not only jailing illegals who come back into the US not a solution to solve our immigration issues, but it also creates a new problem! Where will we even put them? Our high incarceration rates will expand to include hundreds, and if not hundreds, thousands of illegal immigrants who haven't done anything, other than cross a border, to truly earn that spot in the jail cell. Also, to keep these illegal immigrants in jail will cost more to the American taxpayer, who are already paying to house thousands of other criminals who have or have not been victims of this incarceration problem.