特朗普政府没有把开创美国科技发展“第二个大胆时代”的愿景转化为路线图，各界关于美国国家科技事业未来的重要讨论仍在继续。拜登政府上任后，把应对重大挑战、对标“重建更美好未来”议程和重建中产阶级作为其科技创新政策部署的关键出发点，力图以前所未有的方式加大公共投入，加强重大科技战略与政策的设计，强化美国创新引擎，重塑美国的长期竞争优势。美国国会也在推进重大创新立法进程。不过，拜登的雄心壮志也面临一些掣肘因素。
While the Trump administration has failed to turn its vision for a “second bold era” of America’s endless frontier in science and technology into a concrete roadmap，the debate over the future of American science and technology was intensified. For the sake of coping with the urgent challenges，aligning with the “Build Back Better” agenda and a “Middle-out” perspective，the successive Biden administration was wrestling with major science and innovation policy initiatives in a strategic way. It was eager to increase public input by a wide margin and was endeavoring to perfect the relevant strategy and policy design，in a bid to strengthen the U.S. innovation engine and reshape the country’s competitive advantage in the long run. In the meantime，the Congress is pushing forward its major innovation legislations. However，Biden’s science and technology ambition may encounter some constraints that are not easy to overcome.
