据我粗浅的了解，这个socialsecurity领的钱是跟highest 3 -year average wage, retirement age相关的。65-67（depends on birth year)岁退休可以领到full social security benefits, early retirement results in a discounted benefits.

老年父母来了入籍的，我就不知道是不是可以领了。但是social security is universal to old age, suppose 是可以领的。