Well, I'd agree that it isn't necessarily a bad thing, as long as the company they are going to operate can't affect out national security.
But I'm sure, though, that if we used our imaginations, we could come up with a way our security could be affected by their running just about any company.
They could easily decide to blow up a train while it's crossing an important bridge, killing 1000 or so passengers and knocking the bridge out.
On another note, D-J, why do you suppose this Committee on Foreign Investment in the U.S. holds its meetings in secret?