1. 2021, Jan. 1 AP “In a First, Congress Overrides Trump Veto of NDAA” https://federalnewsnetwork.com/defense-main/2021/01/in-a-first-congress-overrides-trump-veto-of-ndaa/.
2. CQ Magazine. February 10, 2020. “Trump’s acquittal caps decades-long power shift away from Congress” pp. 1–10.
3. Canes-Wrone, Brandice, William G. Howell, and David E. Lewis. 2008. The Journal of Politics 70 (1): 1–16.
4. Carter, Ralph G., and James M. Scott. 2009. Choosing to lead: understanding congressional foreign policy entrepreneurs. Durham, NC: Duke University Press.
5. Cooper, Phillip J. 2002. By order of the president: The use and abuse of executive direct action. University of Kansas Press.