This is a presentation made by the author to the staff of the members of the United States House of Representatives who are part of the STEM Caucus (Science, Technology, Engineering and Mathematics Education Caucus). The briefing was held in the Rayburn Office Building in Washington, DC on July 27, 2007. Also presenting were Harold Pratt and Dr. Jerry Pine. The author elaborates and emphasizes each of these messages: (1) Elementary science education is important; (2) Current status in the US--weak; (3) Good programs are achievable; (4) A domain that is "investable"; (5) Federal investment is critical; and (6) Role of the federal investment is to create capacity for ongoing improvement. The author's closing message was that elementary science education is important-- too important, in fact, to tolerate the current weakness in the national educational system. It is a domain with a proven track record and good knowledge base for replicating successes. It is a domain where federal investment is important and where such investment can bring high rates of return. This work will require years of steady effort, but it is very likely to bring tangible benefits to millions of students. Dr. St. John concluded by urging Congress to support the National Science Foundation (NSF), Department of Education and other agencies in making targeted and strategic investments in elementary science education.