These numbers from the "The Cato Institute" are Fake News. 

They "estimate" that U.S. economic output would be reduced by $280-billion (U.S.) over 10 years if 800,000 "Dreamers" are deported.   

When you do the math, that amounts to $35,000 US in economic output per year per "Dreamer".

The problem is the per-capita annual income for Hispanics in the US is $15,674 .  

So where's the $35,000 per year coming from?  How can spend $35,000 if you only make $15,000?

This is the problem with the Fake News. These "institutes" just make stuff up and its published with zero thought. Sad.