51% of immigrants are on welfare
Welfare also costs ~$2-3k per capita per year, meaning that if they're working virtually
any job, they're paying off their welfare in the form of economic productivity. Even if they aren't paying income taxes, they are buying stuff at the store. They are working for a boss who pays income taxes. They're supporting a company that hires employees that pay income tax. It is virtually impossible not to break even by importing immigrants that work.
Even if we assume depression-level unemployment rates, it's still a net-positive for our economy. If you went to the University of Chicago and looked for the oldest, most curmudgeony conservative economist you could find, he would still tell you this kind of crackdown on immigration is bad for the economy.
Try again
Better question: do you think you've worked enough to pay off the $78-240k taxpayers have spent to put your ass through twelve years of public schooling? At least working-age immigrants weren't educated in our country. They come to work having received none of the public schooling benefits given to naturalized citizens. Yet you still think you're somehow an economic priority?