Just read this op-ed article about updating the train system in the US. Apparently Obama is on board but the logistics are obviously difficult.
High-speed rail lines are expensive and can take years, even decades, to complete, particularly in a country as large as the United States. As a consequence, the president needs a quick success to show America what a genuine high-speed railway can offer. Fortunately, he has a great test case right on his doorstep: the Acela services along Amtrak’s Northeast Corridor, which the stimulus package essentially ignored.