What would happen if welfare was run by the state government​ instead of the federal government?

Given the way that sort of thing has worked out in other countries of the feds divesting themselves to their equivalents of states it can't possibly go right except in maybe the wealthiest states for no other reason then states by definition have less money to go around to begin with and any program does not run on pixie dust it requires funding. It is a good way to kill off programs in a way that is politically safe.