Following Trump’s election, Democratic mayors in cities including New York, Chicago, Los Angeles, Seattle, Philadelphia, San Francisco and Providence, R.I., among others, said they would challenge any Trump administration move to crack down on illegal immigration. Many billions of dollars could be at stake. For instance, San Francisco alone gets about $1 billion annually from the federal government, both directly and through the state, according to Ben Rosenfield, the controller for the city and county. The city is “assessing budget impacts from possible federal actions,” but support for public health and human service programs could be affected, he said. Presidents have limited powers to strip federal funding from local governments without the express approval of Congress, say legal experts. This is especially true in regard to mandatory expenditure programs, like Medicaid. How most illegal immigrants survive in the United States, is simply Federal funding through groups like DACA...Where illegal immigrants receive grants and even housing through Federal funding. If it's one thing you need to survive in the United States Of America it is simply cash flow...So hopefully there is a plan where President Trump will cut all Federal funding through Obama amnesty programs to illegal immigrants. San Francisco receiveing one billion dollars a year for illegal immigrants through Obama's Federal funding of sanctuary cities, would probably mean close to fifty-thousand families receive this funding in San Francisco alone who are here illegally...So if President Trump simply ended that cash flow, that would mean thousands of illegals leaving the United States. If President Trump just simply cuts Federal funding, sanctuary cities could end over night...For the one thing you need to survive in America is a decent cash flow, and under Obama amnesty policies illegal immigrants receive billions under these Federal programs.