NASA Will Face Solomon's Choice in 2014, Dennis Wingo
"If a budget in the range of $16.6 billion is what happens NASA will have a major problem maintaining both the International Space Station (ISS) and the SLS/Orion Exploration program. Given that the funds are simply not going to be available to keep the ISS alive and functioning and to fully construct and operate the SLS/Orion system, something has to give. Are we going to have to kill one to insure the other's survival? That is the choice that that is presenting itself - a clear recipe for disaster as far as NASA's human space flight plans are concerned."