ABC News’ Jake Tapper has reactions from NASA and White House spokesmen:

NASA assistant administrator for public affairs Bob Jacobs told ABC News that “Administrator Bolden understands that NASA’s core mission is exploration, both in space and in scientific endeavors here at home. Inherent to the success of that mission is cooperation and collaboration with other nations which are equally committed to this effort, including expanding the range of countries with which NASA engages and partners.”
In response to criticism, White House spokesman Nick Shapiro said in a statement that “The President has always said that he wants NASA to engage with the world’s best scientists and engineers as we work together to push the boundaries of exploration. Meeting that mandate requires NASA to partner with countries around the world like Russia and Japan, as well as collaboration with Israel and with many Muslim-majority countries. The space race began as a global competition, but, today, it is a global collaboration.”