Meaningless drivel. Although we are dependent now on the Russians for access to the station, by 2020, we will have some type of domestic transport in place (SpaceX, Boeing and Sierra Nevada are all working on vehicles for crew transport to and from ISS). As for the RD-180, we already have about 70 of those stockpiled here in the USA, so there are enough engines for Atlas launches for the foreseeable future.
“As for the RD-180, we already have about 70 of those stockpiled here in the USA,”
Which about covers scheduled launches through 2018.
And after that? What about unscheduled launches? Tests?
Those 80 aren’t going to last long, and the Federal Contracting lead time is far longer than that.