Immigration law experts say the “gold card” proposal is far more complicated and uncertain than President Donald Trump and Commerce Secretary Howard Lutnick made it sound when they announced it last week.

Estimates of how many millionaires could afford to buy Trump's proposed visa range from 1.5 to 3.3 million people, according to recent reports.

President Trump is floating the idea of a new "gold card" visa that would be sold to wealthy foreigners for $5 million.