A $5 million gold card for immigrants?

That is the topic of my latest Bloomberg column, here is one excerpt:

As usual, however, the devil is in the details. There is a good chance Trump’s proposal could work out well — and a chance it could severely damage the nation.

One worry is selection effects. The $5 million fee means the program would skew toward older people, and would probably also skew somewhat male. Neither of those biases is a problem if other methods of establishing residence remain robust. But will they?

With a gold card program, the government would have a financial incentive to limit other ways of establishing residency. You can get an O-1 visa or an H-1B, for instance, if you have a strong record of accomplishment or an interested employer with a proper priority and perhaps some luck. Neither of those options cost anything close to $5 million, even with legal fees. Not everyone with a spare $5 million can get an O-1, or a proper job offer, but still: At the margin, these options would compete with each other.

These other options are well-suited for getting young, talented people into the US, which is precisely the weakness of the gold card proposal. Ideally the US would expand these other paths, but with a gold card program they might be narrowed so the government can reap more revenue from sales of gold cards.

I favor the idea in principle, but am worried it might be part of a broader package to tighten immigration more generally.