If there's verifiable facts that prove Rice has acted in an unethical way in her job, then it would be a bad decision to give her more power and responsibility. If, on the other hand, it's found only that she made decisions in good faith based on the information given to her, you can't really fault her in terms of her occupational duties.
But there's a separate question to that, which is the moral ethics of a person who would do things (even in good faith) that they know will result in hurting others. Will Rice make decisions at Dropbox that she knows will hurt people, even if it's the right "business" decision?
With regard to the warrantless wiretaps, it's clear that if there was an actual terrorist that she was trying to put in jail, a warrantless wiretap may help accomplish that goal. She would in effect be acting in good faith while trying to accomplish the goals of her job. But at the same time, she's violating someone's privacy and potentially violating the law. If a similar situation came up at Dropbox, where violating someone's privacy could help the business, would you still want that person employed?
But there's a separate question to that, which is the moral ethics of a person who would do things (even in good faith) that they know will result in hurting others. Will Rice make decisions at Dropbox that she knows will hurt people, even if it's the right "business" decision?
With regard to the warrantless wiretaps, it's clear that if there was an actual terrorist that she was trying to put in jail, a warrantless wiretap may help accomplish that goal. She would in effect be acting in good faith while trying to accomplish the goals of her job. But at the same time, she's violating someone's privacy and potentially violating the law. If a similar situation came up at Dropbox, where violating someone's privacy could help the business, would you still want that person employed?