I disagree. It would provide a formal acknowledgment from our government that it was wrong to prosecute Aaron for his crimes with the severity that it did, and

I disagree. It would provide a formal acknowledgment from our government that it was wrong to prosecute Aaron for his crimes with the severity that it did, and if worded thoughtfully, could establish some limiting precedent for how far future crimes like these should be prosecuted. It's true that the laws themselves need to change, but I think you're underestimating the impact of a President's words.