hat we call "welfare" today has its origins in the 1935 Social Security Act, which provided aid for states to give assistance to a number of classes of Americans, including the elderly, the blind, and the unemployed. The Act provided money for monthly payments to poor children where at least one parent was absent or unable to work. In practice, this meant that the vast majority of aid went to widows and single mothers. The program gradually expanded to all 50 states and in the early 1960s became known as Aid to Families with Dependent Children (AFDC).
Then in 1996, the Republican Congress passed the Personal Responsibility and Work Opportunity Act, which fundamentally altered the nature of welfare. The name of the program was changed to Temporary Assistance to Needy Families (TANF), with the accent on "temporary." The new program would have a five year lifetime limit on cash benefits and require that recipients be working or in a job-training program. Critically, it ended welfare as an "entitlement," meaning that states were no longer required to accept any applicant who met the program's qualifications. Instead, the money goes to states as a "block grant," with the state deciding how many people it will serve and how many it will turn away. The number of people on the rolls immediately began to decline. In 1996, according to the census, there were 4.4 million families receiving welfare; in 2008, it was only 1.6 million.
And when the Great Recession hit in 2008, the states began turning away people in droves; even as millions of Americans fell into poverty, the welfare rolls didn't increase, meaning that a smaller and smaller portion of America's poor families are getting cash assistance from the government.
For Republicans, this is a feature, not a bug; they hope to convert food stamps and Medicaid to block grants as well.
Because TANF is a federal/state program and each state sets its own eligibility standards, benefits vary widely. As you might expect, benefits in Southern states run by Republicans are far more meager than those in Northern and Western states where Democrats govern. In 2011, benefits ranged from a low of $170 a month for a single-parent family of three in Mississippi to a high of $753 for the same family living in New York. TANF spending was set at $16.5 billion per year in the 1996 bill, where it has remained—without any adjustment for inflation—ever since.