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“It is simply a fact that insufficient funding for Amtrak has delayed the installation of PTC, and to deny a connection between the accident and underfunding Amtrak is to deny reality,” said Sen. Charles Schumer, D-N.Y."
So after the Dems try to use dead folks for political purposes before the bodies were even cold, it turns out that the money for the positive train control system that could have prevented the crash was already appropriated.
In fact, the system has already been INSTALLED on that section of track. But it's not been turned on.
The problem is bureaucratic delays at the FCC over spectrum allocation for the radio control.
http://www.usnews.com/news/articles/2015/05/14/exclusive-train-control-was-installed-turned-off-at-time-of-amtrak-crash-congressmen-say