There's a difference between can't and won't. There are all sorts of reasons why Obama may not want to pardon Snowden. But if he thinks he lacks the power to pa

There's a difference between can't and won't. There are all sorts of reasons why Obama may not want to pardon Snowden. But if he thinks he lacks the power to pardon, he is clearly wrong. So why would he claim that he lacks a power he clearly has?