The risk here is, obviously, that security at the ports involves cargo coming in from other countries while operating a railroad doesn't.

Theonly thing I can think of that operating a port has in common with operating a railroad is that they both involve transportation.

Most of the taxicab drivers (transportation again) in NYC are from Muslim countries, and I don't consider that to be a security risk.

I know, JJ, that you're not saying that you think this UAE-Ports deal is a good idea, so why even mention the Santa Fe Railroad?