If they are on it they love it. If they are super rich and will never need it, they love it. If they want to steal from the pool of money to spend it on something else, they love it.
But they don't want to pay for it or give it to people who need it.
DEMOCRATS
Social democrats of which country?
The Democratic Party under President Franklin D Roosevelt (for Social Security, 1935), and the same party under Lyndon Johnson for Medicare (1965).
Åland Social Democrats was created in 1971.
Social Democrats of Croatia ended in 1994.
Social Democrats of Croatia was created in 1990.
Centre of Social Democrats ended in 1995.
Croatian Social Democrats was created in 2004.
Party of Social Democrats was created in 1994.
Gibraltar Social Democrats was created in 1989.
No one "gave" Social Security benefits to immigrants. Illegal immigrants aren't eligible to receive Social Security compensation; legal immigrants are eligible if they earned wages and paid FICA taxes, just like natural-born citizens.
Party of Bulgarian Social Democrats was created in 1990.