The letter is valid.
1) Apple needs to be held Accountable. And that goes to every naysayer in this thread who writes something as silly as "just return it if you don't like it." We all appreciate your "novel" idea. But this isn't about returning the phone or not - it's about Apple taking RESPONSIBILITY and ACCOUNTABILITY for a product they released
2) Who cares if the press conference was already called. The Senator is going on record as saying that Apple needs to address this issue. As of today, NO ONE in the Public Domain knows what will or won't be covered in that conference. The Senator is giving a blow-by-blow request on what he feels needs to be accomplished. It's great timing. It's the last ditch effort to appeal to Apple that whatever they have planned tomorrow to include some/all of his requests.
Are you kidding me? You know Apple has already taken responsibility for this. They're standing behind their product and offering full refund if you're not satisfied. You know that people are still well inside their return period. This letter is a joke. The iPhone is not a utility. We live in a free market, and if you're unhappy take your business elsewhere. The company/corp will get the message soon enough. The last thing we need is some senator who is up for reelection getting involved in this. Now if Apple was not offering full refunds, then I say the senator has the right to get involved. Until then, enough is enough.
Sad times we live in... go ahead call me fanboy, but this is just asinine.