No.
Federal law prohibits felons from owning guns...and voting believe it or not.
The basic answer is no. The short answer is, a felon cannot have access to guns, and at a gun show, a felon would have access to guns, so it's illegal.
Absolutely not.
No felon can buy, posess, or live in a house or dwelling where firearms are present. Furthermore if a non-felon buys a firearm for a felon as a gift or to cover for them because they cannot pass the 4473 background check they are aiding a felon and punishable by the same prison sentence. The standard sentence for felony possesion of a firearm is 10 years in a federal prison. But that is rarely handed out. However it would greatly benefit the U.S. if it did hand out this punishment. However, to clarify part of the answer, the spouse of a felon can own a gun, as long as the spouse can otherwise legally own the gun. However, the gun cannot be stored anywhere the felon could possibly have access to it.
If you are convicted FEDERAL felon, you can't. If you are convicted state felon, and you qualify you can make application for exopungement. See below link:
In the U.S. a convicted felon may not own or posses a gun.
No. No convicted felon can ever lawfully be in possession of a firearm.
Yes
Yes as long as your not a felon.
no
Notify the police.
The felon will most likely be arrested.