This is not a defense of Obama, but she has 15 kids, therefore, much of this situation quite obviously predates the Obama administration.
Of course, you are technically correct. Lyndon Baines Johnson kicked off the “Great Society” and the establishment of the welfare system; Richard Milhouse Nixon then doubled down on it and implemented the Earned Income Tax Credit - both having been used to enslave minorities and other low-income, low-initiative ‘citizens’.
Obama, however, has TRIPLED/QUADRUPLED-down on both concepts. He added 1.2 Trillion Dollars to the bill just last year alone. He intends to increase this entitlement bill to more than half the entire Federal Budget. He does not care if we cannot pay for it; his goal is to bring major social change and he cannot do that until the entire American free market system and individual freedoms have been destroyed for him to rebuild his new socialist utopia.