It is very difficult to understand the facts as you present them. From what I understand you ask whether being a prior felon, can prevent you from receiving a settlement in a civil case. The answer is no.
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There is no such thing as "easily proven," especially when you are making claims against the Federal government. And while there is no bar to a convicted felon receiving a civil settlement, if the facts underlying the felony conviction are at issue, they cannot be re-litigated in the civil dispute.