I don't think a linear collider will be build any time soon. There is one country in the world which said it would pay a part of it, but likely only a small part and that is Germany, when the gov cancelled a smaller version for DESY Hamburg.

The US recently has cutted financing of R&D. And what was the reason?
The democrats were angry because Bush has vetoed some of their pet projects. As a revenge they cutted spending on some of Bush's pet projects.

Der Amerikaner ist die Orchidee unter den Menschen
Volker Pispers