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1、CRS INSIGHT Prepared for Members and Committees of Congress INSIGHTINSIGHTi i U.S. Funding to the World Health Organizat。

2、CRS INSIGHT Prepared for Members and Committees of Congress INSIGHTINSIGHTi i Federal Health Centers and COVID19 Elayne 。

3、 Transfer of Defense Articles: Sale and Export of U.S.Made Arms to Foreign Entities Nathan J. Lucas Section Research Man。

4、CRS INSIGHT Prepared for Members and Committees of Congress INSIGHTINSIGHTi i Temporary Deferment of Import Duty Payment。

5、 Veto Threats and Vetoes in the George W. Bush and Obama Administrations Meghan M. Stuessy Analyst in Government Organiz。

6、 https:crsreports.congress.gov April 30, 2020COVID19: National Security and Defense StrategyThe outbreak of the COVID19 。