TSA already monitors Amtrack:
http://www.cnn.com/2012/02/06/opinion/don-phillips-tsa-vipr-...
Due to the broad description of the organization's purpose, it gives them overreaching powers allowing them to secure any mode of transportation. This has led to the TSA expanding its presence and showing up at NFL games:
http://www.huffingtonpost.com/christopher-elliott/the-tsa-wa...
Edit: For those commenting about NFL game presence without reading the linked article...
> Few people know that $105 million of their taxpayer dollars are going to fund
> 37 VIPR teams in 2012, whose purpose is to "augment" the security of any mode
> of transportation. They don't realize that these VIPR teams can show up
> virtually anytime, anywhere and without warning, subjecting you to a search
> of your vehicle or person.The problem is that the American people want to do anything about terrorists, crime or "for the children" at the expense of our civil liberties. It's entirely irrational. TSA at NFL games will not even remotely begin to change that.
There was a bit of an uproar about the increased security measures at NFL stadiums some years ago but it died down and things went on as usual.
Here's an overview:
http://www.rollingstone.com/politics/blogs/national-affairs/...
So an NFL game is now considered a mode of transportation?
You didn't use to have to produce ID to travel inside your own country, shame it's come to this.
Uh, huh. Just wait. TSA stands for Transportation Security Administration. Transportation...
Well the S stands for security and we are still waiting for that...