If you would like to see more articles like this please support our coverage of the space program by becoming a Spaceflight Now Member. If everyone who enjoys our website helps fund it, we can expand and improve our coverage further. STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION NASA Administrator Bill Nelson holds up a picture of China’s Zhurong Mars rover during a virtual hearing with a House of Representatives subcommittee Wednesday. Credit: NASA/U.S. House of Representatives Holding up a photo taken by China’s new Mars lander, NASA Administrator Bill Nelson warned Congress Wednesday that his agency faces increasingly stiff competition on the high frontier and that sustained funding for a new moon lander, infrastructure upgrades and other critical programs is vital for America’s space program.