Which 'illegal immigrants' are you referring to exactly? What do you know about DACA?  If you are an illegal immigrant, how do you get 'welfare'?  How many of the ostensibly 11 million supposedly illegal Mexicans are on welfare?  How many of the other millions of non-Mexican illegals on welfare? How many DACAs are on welfare? Where is this information about the relationship between immigrants and economics to which you refer, maybe you could point to where these facts are to be found?  In the meantime, consider not conflating different things/muddying the waters to make a point.