For those of you who contact your senators or representatives, please try to be civil. If you have appropriate qualifications in the field (advanced degrees, etc.), please politely offer your assistance to your senator's staff to help them understand the technical complexities of the proposal. That is exactly what I have done, and I have had significant success with this approach with Senator Jim DeMint. I am on his "call list" and I occasionally receive calls from his office when proposals like this come up and I am asked for my input on the matter. (I have not received a call on this one, so I will contact Senator DeMint's office once I've had a chance to read the bill. Often they do not recognize that there is a "computer security" component to a bill such as this - they just think "ID card" and do not think of the databases behind the cards.)
If you are polite and you have appropriate qualifications that your senator or representative will recognize, you may have an opportunity to have a positive influence in the process. Remember, though, that your senators and representatives are people who have fears, egos, and agendas just like everyone else. Show them that you want to work WITH them.
If you honestly cannot bring yourself to assist your senator or representative for whatever reason you have, then please at least be polite in your letters. An angry letter filled with vitriol and profanity will only alienate the recipient from your viewpoint.
Pointing out that this bug dates back to 1993 is a very important part of the story, because it shows that even with their careful reviews of the code that things can still slip by.
Supposedly, Microsoft performed a review of all of the code used in Vista and Windows 7. This is not a slam against Microsoft, but an illustration that something as complex as Windows will always have security flaws no matter how hard you try to fix things after the fact. You cannot add security as a feature. It needs to be included from the initial design.
The person who can smile when something goes wrong has thought of someone to blame it on.