El término Social Security abarca más conceptos de protección, en términos generales, que el de "welfare", al comprender prestaciones en especie (básicamente la sistencia médica) como una serie de prestaciones económicas para cubrir, tanto riesgos de trabajo como de vida (Pensiones de Vejez, cesantía Laboral, Invalidez, Muerte)

Algunas referencias:

LII's Social Security Library
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Library of Social Security law with links to key primary and secondary sources: the Social Security Act, Regulations, Programs and Operations Manual System ...
www.law.cornell.edu/socsec/ - 9k

Social Security (United States) - Wikipedia, the free encyclopedia
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Social Security, in the United States, currently refers to the Federal Old-Age, Survivors, and Disability Insurance (OASDI) program. ...
en.wikipedia.org/wiki/Social_Security_(United_States) - 139k -

Strengthening Social Security
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President Bush's plan to reform Social Security. Personal retirement accounts, rate of return on Social Security tax dollars.
www.whitehouse.gov/infocus/social-security/ - 28k

Social Security Online
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Official website of the US Social Security Administration.
www.ssa.gov/ - 19 Abr 2007 -

Social Security - Retirement Planning - AARP
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Social Security protects the economic security of workers, retirees and their families. Get AARP news and resources about Social Security.
www.aarp.org/socialsecurity/ - 27k -

Suerte, Andrea !