General assistance (called GA after this) is a program run by every town to help people who don't have enough money to pay their necessary expenses. You may be eligible if your basic living costs are more than the money you have or can earn.
SSI benefits are the benefits from the Social Security Administration (SSA) that come on the 1st of the month. If SSA finds that you have gotten too much money in your SSI benefit, they will send you a Notice of Overpayment.
Immigrants who are not official U.S. citizens may be eligible for Supplemental Security Income, or SSI, if they meet certain qualifications. SSI can help people who are elderly or disabled, and have little or no income.