Are you proposing military occupation of the U.S.? We didn't even jail the whole Iraqi army. We took away their guns and sent them home.
How do you propose to round up all of them?
Its realistic to find and jail 20 to 25%. Jail that many and put them on chain gangs then cut off the social services to the rest and they will self deport.
Remember 95% of the Hispanics who come here had jobs at home. They just come to make more money. South America isn't like Africa people aren't starving. They're just greedy and willing to become criminals to make an extra buck.
Show them that crime doesn't pay and they will go away.