High Speed Rail is Not Currently Economically Viable  The economic investment required for a high speed rail system to be implemented in the U.S. is substantial. Currently, the American deficit is at a level that is bad enough that S&amp;P has downgraded the rating on American debt. Given that this is true and that the public spending required for high speed rail is substantial and a situation is caused where the American government would have to increase the flow of money out of its coffers. Even the lowest estimates by the California High-Speed Rail Authority are around $45 billion and it is likely to be much higher. [1] As such the deficit level within the U.S. could stand to increase from a system that would not provide benefit for another five years at least, if it provides benefit at all. At this time, investment in such an area is not needed when the result of such investment could be greater repayments on American bonds that reverse any economic benefits that the system stands to give. [2]  As such, extra spending within the current economic climate needs to show significant long term benefits as well as show at least some signs of being able to immediately help the economy, otherwise there is too great a risk that comes from extra public spending.  [1] California High-Speed Rail Authority, ‘Financing and Costs’,   [2] “US loses AAA credit rating after S&amp;P downgrade.” BBC. 06/08/2011