Washington (UPI) Jun 11, 2013A U.S. expert says the U.S. Congress should adopt a "more constructive set of policies" that encourages rather than bans U.S.-Chinese collaboration in space. Gregory Kulacki, senior analyst and China project manager for the Global Security Program at the Union of Concerned Scientists, criticized Congress for barring NASA from participating in any partnership or collaboration with China. Reported by Space Daily 13 hours ago.