The $1200 stimulus check is something of an aberration. You typically need to apply for things like food stamps, Section 8 housing or Medicaid (our government health insurance for the poor).

When you apply, you basically swear this is true to the best of knowledge and if it isn't you can be accused of fraud and potentially charged with criminal activity, or just have the money taken back in some cases. (My knowledge of the system is limited, but I was on food stamps for a while. Having something like $2000 in savings can disqualify you, iirc.)