; (4) the Administrator should take into account the lessons learned from the cost and schedule issues realized in developing the James Webb Space Telescope when making decisions regarding the scope of and the technologies needed for future scientific missions; (5) the Administrator should take into account the impact large programs that overrun cost and schedule may have on other NASA programs in earlier phases of development when selecting future scientific missions; and (6) the Administration should continue to develop the James Webb Space Telescope with a development cost (as defined in section 30104 of title 51, United States Code) of no more than $9,000,000,000 as estimated by the James Webb Space Telescope Independent Review Board report released in May 2018. (b) Requirements (1) In general The Administrator shall continue— (A) to closely observe the performance of the James Webb Space Telescope project; and (B) to improve the reliability of cost estimates and contractor performance data throughout the development of the James Webb Space Telescope. (2) Key program objective The Administrator shall continue to develop the James Webb Space Telescope on a schedule to meet the objective of safely launching the James Webb Space Telescope before March 31, 2021. 305. Wide-Field Infrared Survey Telescope (a) Sense of Congress It is the sense of Congress that— (1) a major cost growth in astrophysics Discovery class missions has been harmful to the overall portfolio balance