Social Security has become a core component of retirement security in the United States: Nearly two-thirds of seniors rely on the program’s benefits for most of their income. Similarly, more than 8 in 10 disabled worker beneficiaries rely on Social Security as their main source of income. For 3 in 10 of those workers, Social Security is the only source of income. Social Security also serves as the largest income security program for children, providing vital benefits to 3.4 million children and their families. Year after year, Social Security serves as our nation’s most effective anti-poverty program; in 2012, it kept more than 22 million Americans out of poverty.