They're not already working? Illegal immigrants working and getting paid under the table isn't exactly an ideal solution. The "path to citizenship" approach isn't some overnight magic wand waving procedure that turns millions of illegals into citizens. There would still be deportation involved. And the path to citizenship could require someone to have worked/lived here for X amount of time (similar to a number of bills that were voted on).
if you break the law by coming here illegally why should we provide any help to them to become legal citizens?? They obviously don't care about being good Americans. I don't break into a bank and ask for a loan.