Can the former green card but abandoned can enter to the US to visit his relatives?

A former green card holder who abandoned their status may face challenges re-entering the U.S. to visit relatives. If they have formally relinquished their green card or have been outside the U.S. for an extended period without maintaining residency, they would likely need to apply for a visa. Each case is unique, so it's advisable to consult with an Immigration attorney for specific guidance based on their situation.