To be lien proof or judgment proof simply means that people ordinarily cannot get it even if they win a lawsuit against you. Congress has decided to not allow people who are on disability or Social Security to have their checks attached to pay back a loan or legal judgment. However, there are significant exceptions. Child support has been permitted by Congress to supersede the normal statutory bar so that court-ordered child support can be taken out of your Social Security check before you receive it. Similar exemptions exist for taxes and most recently student loans.