"the US economy depends on illegal immigrants? If you ban them or prevent them from working in the US, wouldnt the economy collape. Everything from hilton holtels to tyson foods depend on illegals. not to mention the entire agriculture sector. So heres my question, would the economy collapse without illegal immigrants."
first of all, illegal aliens already are banned in a de jure sense, just not de facto
and in answer to your question - no.
and not that they are comparable in many ways (since slavery was pure evil), this is a very similar argument to that made by many pro-slavery folks back in the day.
illegal aliens have become the invention that never had a necessity. and most credible economic reports i have read show that illegal aliens cost society on the whole - MORE than they contribute (lost taxes, medical care, jailing of criminals, etc. etc.)