President Donald Trump's plan to offer a "gold card" visa for $5 million could open up increased immigration fraud as well as lead to national security risks, one expert warns.

Foreign nationals with $5 million to spare will be able to register for a "gold card" visa that would give them the right to live and work in the U.S. But details about the program remain unclear.

Cards Against Humanity latest stunt involves buying land near the U.S.-Mexico border to impede President Trump's proposed border wall.