Rich saw no reason to stop dealing with Iran when Ayatollah Khomeni replaced the Shah.
Uber sees them as a way to stop dealing with its pesky drivers.
In anticipation of these changes to U.S. law, several major companies have already decided to stop dealing with Iran.
"Bamako must stop dealing with a few powerful families and individuals in the north," says Gatia's Almahmoud.
Some may even stop dealing with particularly troublesome retailers, as Sega did, reducing the choices available to shoppers.
The Chinese have also taken public steps to confront North Korea, like ordering the Bank of China to stop dealing with North Korea's largest foreign-exchange bank.
Safeway announced that it would stop dealing with dozens of small wholesalers to supply its national chain, and preferred to deal with only one.
But Paul Salvatore, a lawyer for Schindler, said the company had the right to stop dealing with the electrical workers union and to make the employees switch unions.
"There are quite a lot of diamonds coming from these areas and somebody is going to lose money if they stop dealing with the rebels".
He would also like to stop dealing with any company that paid kickbacks, but he said he realized that might not be practical.
Yet Bush was told by his economic advisors to stop dealing with the economy as, thanks to Iraq, his re-election was assured.
